Here is the list of items showing how many current eBay auctions are underway.
The detail will show the current bid price for the item.
| Item Category: Diesel | Year Released | Year Retired | Part Number | Category | Right Now on eBay |
| Open |
| Reading F-7 A Unit Diesel Engine with Proto-Sound 3.0 (Scale Wheels) | 2016 | 2016 | 22-20604-2 | Diesel | 0 |
| | | | | |
| Reading F-7 A Unit Diesel With Proto-Sound 3.0 | 2019 | 2019 | 35-20059-1 | Diesel | 0 |
| Reading F-7 A Unit Diesel With Proto-Sound 3.0 | 2019 | 2019 | 35-20060-1 | Diesel | 0 |
| Reading F-7 A Unit Non-Powered Diesel Engine (Hi-Rail Wheels) | 2016 | 2016 | 20-20603-4 | Diesel | 0 |
| Reading F-7 A-Unit Diesel (Non-Powered) | 2019 | 2019 | 35-20060-4 | Diesel | 0 |
| Reading F-7 ABA Diesel Set with Proto-Sound 2.0 (Hi-Rail Wheels) | 2007 | 2007 | 20-2743-1 | Diesel | 0 |
| Reading F-7 B Unit Diesel With Proto-Sound 3.0 | 2019 | 2019 | 35-20061-1 | Diesel | 0 |
| Reading F-7 B-Unit Diesel (Non-Powered Scale Wheels) | 2016 | 2016 | 22-20603-3 | Diesel | 0 |
| Reading F-7 B-Unit Diesel (Non-Powered) | 2016 | 2016 | 20-20603-3 | Diesel | 0 |
| Reading F-7 B-Unit Diesel (Non-Powered) | 2016 | 2016 | 20-20604-3 | Diesel | 0 |
| Reading F-7 B-Unit Diesel (Non-Powered) | 2007 | 2007 | 20-2743-3 | Diesel | 0 |
| Reading F-7 B-Unit Diesel (Non-Powered) | 2019 | 2019 | 35-20059-3 | Diesel | 0 |
| Reading FM Train Master Diesel Engine (Non-Powered) | 2011 | 2011 | 20-20126-3 | Diesel | 0 |
| Reading FM Train Master Diesel Engine (Non-Powered) | 2012 | 2012 | 30-20093-3 | Diesel | 0 |
| Reading FM Train Master Diesel Engine - With Proto-Sound 2.0 (Hi-Rail Wheels) | 2011 | 2011 | 20-20126-1 | Diesel | 0 |
| Reading FM Train Master Diesel Engine - With Proto-Sound 2.0 (Scale Wheels) | 2011 | 2011 | 20-20126-2 | Diesel | 0 |
| Reading FM Train Master Diesel Engine with Proto-Sound 3.0 | 2012 | 2012 | 30-20093-1 | Diesel | 0 |
| Reading FM Train Master Diesel Engine With Proto-Sound 3.0 (Hi-Rail Wheels) | 2022 | 2022 | 20-21652-1 | Diesel | 0 |
| Reading FM Train Master Diesel Engine With Proto-Sound 3.0 (Hi-Rail Wheels) | 2022 | 2022 | 20-21653-1 | Diesel | 1 |
| Reading FT A Unit Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2019 | 2019 | 20-21137-1 | Diesel | 0 |
| Reading FT A Unit Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2019 | 2019 | 20-21138-1 | Diesel | 0 |
| Reading FT ABA Diesel Set - With Proto-Sound 2.0 | 2002 | 2002 | 20-2345-1 | Diesel | 2 |
| Reading FT B-Unit Diesel (Non-Powered) | 2019 | 2019 | 20-21137-3 | Diesel | 0 |
| Reading GE I/R Box Cab Diesel Engine With Proto-Soundr 2.0 | 2007 | 2007 | 20-5595-1 | Diesel | 0 |
| Reading GE U30C Diesel Engine (Non-Powered) | 2007 | 2007 | 20-2780-3 | Diesel | 0 |
| Reading GE U30C Diesel Engine with Proto-Soundr 2.0 (Hi-Rail Wheels) | 2007 | 2007 | 20-2780-1 | Diesel | 0 |
| Reading GE U30C Diesel Engine with Proto-Soundr 2.0 (Scale Wheels) | 2007 | 2007 | 20-2780-2 | Diesel | 0 |
| Reading GP-30 Diesel Engine - 2-Rail | 1995 | 1995 | 20-2073-2 | Diesel | 0 |
| Reading GP-30 Diesel Engine - 3-Rail Horn | 1995 | 1995 | 20-2073-0 | Diesel | 0 |
| Reading GP-30 Diesel Engine - With Proto | 1995 | 1995 | 20-2073-1 | Diesel | 1 |
| Reading GP-30 Diesel Engine With Proto-Sound 3.0 | 2014 | 2014 | 20-20416-1 | Diesel | 1 |
| Reading GP-30 Diesel Engine With Proto-Sound 3.0 | 2016 | 2016 | 20-20669-1 | Diesel | 0 |
| Reading GP-30 Diesel Engine With Proto-Sound 3.0 | 2016 | 2016 | 20-20670-1 | Diesel | 0 |
| Reading GP-35 Low Hood Diesel Engine (Non-Powered) | 2011 | 2011 | 20-20130-3 | Diesel | 0 |
| Reading GP-35 Low Hood Diesel Engine with Proto-Sound 2.0 (Hi-Rail Wheels) | 2011 | 2011 | 20-20130-1 | Diesel | 0 |
| Reading GP-35 Low Hood Diesel Engine with Proto-Sound 2.0 (Scale Wheels) | 2011 | 2011 | 20-20130-2 | Diesel | 0 |
| Reading GP-40 Diesel Engine (Non-Powered) | 2002 | 2002 | 20-2373-3 | Diesel | 0 |
| Reading GP-40 Diesel Engine (Non-Powered) | 2008 | 2008 | 20-2855-3 | Diesel | 0 |
| Reading GP-40 Diesel Engine - With Proto-Sound 2.0 | 2002 | 2002 | 20-2373-1 | Diesel | 0 |
| Reading GP-40 Diesel Engine - With Proto-Sound 2.0 | 2008 | 2008 | 20-2855-1 | Diesel | 0 |
| Reading GP-7 Diesel Engine With Proto-Sound 3.0 | 2019 | 2019 | 20-21108-1 | Diesel | 0 |
| Reading GP-7 Diesel Engine With Proto-Sound 3.0 | 2019 | 2019 | 20-21109-1 | Diesel | 0 |
| Reading GP-9 Diesel Engine (Non-Powered) | 2012 | 2012 | 20-20202-3 | Diesel | 0 |
| Reading GP-9 Diesel Engine (Non-Powered) | 2004 | 2004 | 30-2425-3 | Diesel | 0 |
| Reading GP-9 Diesel Engine With Proto-Sound 3.0 | 2012 | 2012 | 20-20202-1 | Diesel | 0 |
| Reading GP-9 Diesel Engine with Proto-Soundr 2.0 | 2004 | 2004 | 30-2425-1 | Diesel | 0 |
| Reading MP15DC Diesel Engine with Proto-Sound 3.0 | 2022 | 2022 | 30-20959-1 | Diesel | 3 |
| Reading NW-2 Switcher Diesel Calf (Non-Powered) | 2018 | 2018 | 30-20565-3 | Diesel | 0 |
| Reading NW-2 Switcher Diesel Engine with Proto-Sound 3.0 | 2018 | 2018 | 30-20565-1 | Diesel | 0 |
| Reading RS-3 Diesel Engine (Non-Powered) | 2005 | 2005 | 30-2609-3 | Diesel | 0 |
| Reading RS-3 Diesel Engine - With Proto-Sound 2.0 | 2005 | 2005 | 30-2609-1 | Diesel | 0 |
| Reading RS-3 Diesel Engine With Proto-Sound 3.0 | 2020 | 2020 | 30-20713-1 | Diesel | 0 |
| Reading SD-45 Diesel Engine (Non-Powered) | 2017 | 2017 | 30-20421-3 | Diesel | 0 |
| Reading SD-45 Diesel Engine (Non-Powered) | 2006 | 2006 | 30-2702-3 | Diesel | 0 |
| Reading SD-45 Diesel Engine with Proto-Sound 2.0 | 2006 | 2006 | 30-2702-1 | Diesel | 0 |
| Reading SD-45 Diesel Engine with Proto-Sound 3.0 | 2017 | 2017 | 30-20421-1 | Diesel | 0 |
| Reading SD45 Diesel Engine - 2-Rail | 1995 | 1995 | 20-2101-2 | Diesel | 0 |
| Reading SD45 Diesel Engine - 3-Rail Horn | 1995 | 1995 | 20-2101-0 | Diesel | 0 |
| Reading SD45 Diesel Engine - With Proto | 1995 | 1995 | 20-2101-1 | Diesel | 1 |
| Reading SD45 Low Hood Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2020 | 2020 | 20-21421-1 | Diesel | 0 |
| Reading SD45 Low Hood Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2020 | 2020 | 20-21422-1 | Diesel | 0 |
| Reading SD45 Low Hood Diesel Engine with Proto-Sound 3.0 (Scale Wheels) | 2020 | 2020 | 22-21421-2 | Diesel | 0 |
| Reading SD45 Low Hood Diesel Engine with Proto-Sound 3.0 (Scale Wheels) | 2020 | 2020 | 22-21422-2 | Diesel | 0 |
| Reading SD70ACe Diesel Engine (Comfort Cab) with Proto-Sound 3.0 | 2013 | 2013 | 80-2244-1 | Diesel | 0 |
| Reading SD70ACe Diesel Engine (Comfort Cab) with Proto-Sound 3E+ | 2013 | 2013 | 80-2244-5 | Diesel | 0 |
| Reading SD70ACe Diesel Engine (Non-Powered) | 2013 | 2013 | 20-20271-3 | Diesel | 0 |
| Reading SD70ACe Diesel Engine Comfort Cab (DCC Ready) | 2013 | 2013 | 80-2244-0 | Diesel | 0 |
| Reading SD70ACe Diesel Engine with Proto-Sound 3.0 | 2019 | 2019 | 70-2140-1 | Diesel | 0 |
| Reading SD70ACe Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2013 | 2013 | 20-20271-1 | Diesel | 1 |
| Reading SD70ACe Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2017 | 2017 | 20-20809-1 | Diesel | 0 |
| Reading SD70ACe Diesel Engine with Proto-Sound 3.0 (Scale Wheels) | 2013 | 2013 | 20-20271-2 | Diesel | 0 |
| Reading SD70ACe Diesel Engine with Proto-Sound 3.0 (Scale Wheels) | 2017 | 2017 | 22-20809-2 | Diesel | 0 |
| Reading SD70ACe Imperial Diesel Engine With Proto-Sound 3.0 | 2013 | 2013 | 30-20135-1 | Diesel | 0 |
| Reading SW-1 Switcher Diesel Engine with Proto-Soundr 2.0 | 2008 | 2008 | 30-2821-1 | Diesel | 0 |
| Reading SW-1500 Switcher Diesel Engine (Non-Powered) | 2006 | 2006 | 30-2725-3 | Diesel | 0 |
| Reading SW-1500 Switcher Diesel Engine with Loco-Sound | 2000 | 2000 | 30-2189-0 | Diesel | 0 |
| Reading SW-1500 Switcher Diesel Engine with Proto-Soundr 2.0 | 2000 | 2000 | 30-2189-1 | Diesel | 0 |
| Reading SW-1500 Switcher Diesel Engine with Proto-Soundr 2.0 | 2006 | 2006 | 30-2725-1 | Diesel | 0 |
| Reading VO 1000 Diesel Engine (Non-Powered) | 2005 | 2005 | 30-2639-3 | Diesel | 0 |
| Reading VO 1000 Diesel Engine - With Proto-Sound 2.0 | 2005 | 2005 | 30-2639-1 | Diesel | 1 |
| Reading VO 1000 Diesel Engine - With Proto-Sound 2.0 | 2007 | 2007 | 70-2049-1 | Diesel | 0 |
| Reading VO 1000 Diesel Engine with Proto-Sound 3.0 | 2022 | 2022 | 20-21608-1 | Diesel | 2 |
| Reading VO 1000 Diesel Engine with Proto-Sound 3.0 | 2022 | 2022 | 20-21609-1 | Diesel | 0 |
| Red River Valley & Western SD70Mac Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2025 | 2025 | 20-21952-1 | Diesel | 0 |
| Red River Valley & Western SD70Mac Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2025 | 2025 | 20-21953-1 | Diesel | 0 |
| Republic Steel SW-1 Switcher Diesel Engine with Proto-Sound 3.0 | 2019 | 2019 | 30-20598-1 | Diesel | 0 |
| Republic Steel SW1500 Diesel Switcher with Proto-Sound 3.0 | 2021 | 2021 | 30-20841-1 | Diesel | 0 |
| Republic Steel SW1500 Diesel Switcher with Proto-Sound 3.0 | 2021 | 2021 | 30-20842-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac Alco S-2 Switcher Diesel Engine (Non-Powered) | 2004 | 2004 | 20-2498-3 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac Alco S-2 Switcher Diesel Engine with Proto-Sound 2.0 | 2004 | 2004 | 20-2498-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac Alco S-2 Switcher Diesel Engine with Proto-Sound 3.0 | 2019 | 2019 | 20-21180-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac Alco S-2 Switcher Diesel Engine with Proto-Sound 3.0 | 2019 | 2019 | 20-21181-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac E-3 AA Diesel Engine Set with Proto-Sound 2.0 | 2010 | 2010 | 30-2970-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac E-3 B Unit Diesel Engine (Non-Powered) | 2010 | 2010 | 30-2970-3 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac E-8 A Unit Diesel Engine (Non-Powered) | 2018 | 2018 | 20-21043-4 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac E-8 A Unit Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2018 | 2018 | 20-21042-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac E-8 A Unit Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2018 | 2018 | 20-21043-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac E-8 AA Diesel Engine Set with Proto-Soundr 2.0 | 2004 | 2004 | 30-2452-1 | Diesel | 1 |
| Richmond, Fredericksburg & Potomac E-8 ABA Diesel Engine Set - With Proto-Sound 2.0 | 2001 | 2001 | 20-2318-1 | Diesel | 3 |
| Richmond, Fredericksburg & Potomac E-8 B-Unit Diesel (Non-Powered) | 2018 | 2018 | 20-21042-3 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac E-8 B-Unit Diesel Engine (Non-Powered) | 2004 | 2004 | 30-2452-3 | Diesel | 1 |
| Richmond, Fredericksburg & Potomac F-7 A Unit Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2023 | 2023 | 20-21833-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac F-7 A Unit Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2023 | 2023 | 20-21834-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac F-7 A Unit Non-Powered Diesel Engine (Hi-Rail Wheels) | 2023 | 2023 | 20-21833-4 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac F-7 A Unit Non-Powered Diesel Engine (Hi-Rail Wheels) | 2023 | 2023 | 20-21834-4 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac F-7 ABA Diesel Set with Proto-Sound 3.0 (Hi-Rail Wheels) | 2014 | 2014 | 20-20389-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac F-7 ABA Diesel Set with Proto-Sound 3.0 (Scale Wheels) | 2014 | 2014 | 22-20389-2 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac F-7 B-Unit Diesel (Non-Powered) | 2014 | 2014 | 20-20389-3 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac F-7 B-Unit Diesel (Non-Powered) | 2023 | 2023 | 20-21833-3 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac F-7 B-Unit Diesel (Non-Powered) | 2023 | 2023 | 20-21834-3 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-35 Low Hood Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2018 | 2018 | 20-20986-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-35 Low Hood Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2018 | 2018 | 20-20987-1 | Diesel | 1 |
| Richmond, Fredericksburg & Potomac GP-35 Low Hood Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2021 | 2021 | 20-21576-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-35 Low Hood Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2021 | 2021 | 20-21577-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-35 Low Hood Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2021 | 2021 | 20-21618-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-35 Low Hood Diesel Engine with Proto-Sound 3.0 (Scale Wheels) | 2018 | 2018 | 22-20986-2 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-35 Low Hood Diesel Engine with Proto-Sound 3.0 (Scale Wheels) | 2018 | 2018 | 22-20987-2 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-40 Diesel Engine (Non-Powered) | 2003 | 2003 | 20-2425-3 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-40 Diesel Engine (Non-Powered) | 2007 | 2007 | 20-2757-3 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-40 Diesel Engine - With Proto-Sound 2.0 | 2003 | 2003 | 20-2425-1 | Diesel | 2 |
| Richmond, Fredericksburg & Potomac GP-40 Diesel Engine - With Proto-Sound 2.0 | 2007 | 2007 | 20-2757-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-40 Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2020 | 2020 | 20-21467-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-40 Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2020 | 2020 | 20-21468-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-40 Diesel Engine with Proto-Sound 3.0 (Scale Wheels) | 2020 | 2020 | 22-21467-2 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-40 Diesel Engine with Proto-Sound 3.0 (Scale Wheels) | 2020 | 2020 | 22-21468-2 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-7 Diesel Engine (Non-Powered) | 2005 | 2005 | 30-2603-3 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-7 Diesel Engine with Horn & Bell | 2005 | 2005 | 30-2603-0 | Diesel | 1 |
| Richmond, Fredericksburg & Potomac GP-7 Diesel Engine With Proto-Sound 3.0 | 2021 | 2021 | 20-21542-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-7 Diesel Engine With Proto-Sound 3.0 | 2021 | 2021 | 20-21543-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac GP-7 Diesel Engine with Proto-Soundr 2.0 | 2005 | 2005 | 30-2603-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac SW-1500 Switcher Diesel Engine (Non-Powered) | 2006 | 2006 | 30-2726-3 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac SW-1500 Switcher Diesel Engine with Proto-Soundr 2.0 | 2006 | 2006 | 30-2726-1 | Diesel | 0 |
| Richmond, Fredericksburg & Potomac SW1200 Switcher Diesel Engine with Proto-Sound 3.0 | 2022 | 2022 | 30-21072-1 | Diesel | 1 |
| Richmond, Fredericksburg & Potomac SW1200 Switcher Diesel Engine with Proto-Sound 3.0 | 2022 | 2022 | 30-21073-1 | Diesel | 1 |
| Rio Grande Alco PA AA Diesel Set - With Proto-Sound 2.0 | 2007 | 2007 | 70-2037-1 | Diesel | 0 |
| Rio Grande Alco PA ABA Diesel Set - With Proto-Sound 2.0 | 2006 | 2006 | 20-2636-1 | Diesel | 0 |
| Rio Grande Alco PA B-Unit Diesel (Non-Powered) | 2006 | 2006 | 20-2636-3 | Diesel | 1 |
| Rio Grande Alco PA B-Unit Diesel (Non-Powered) | 2007 | 2007 | 70-2037-3 | Diesel | 0 |
| Rio Grande G.E. 44 Ton Phase 1 Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2020 | 2020 | 20-21385-1 | Diesel | 0 |
| Rio Grande G.E. 44 Ton Phase 1 Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2020 | 2020 | 20-21386-1 | Diesel | 0 |
| Rio Grande GP-30 Diesel Engine (Non-Powered) | 2007 | 2007 | 20-2748-3 | Diesel | 0 |
| Rio Grande GP-30 Diesel Engine - 2-Rail | 1995 | 1995 | 20-2068-2 | Diesel | 0 |
| Rio Grande GP-30 Diesel Engine - 3-Rail Horn | 1995 | 1995 | 20-2068-0 | Diesel | 0 |
| Rio Grande GP-30 Diesel Engine - With Proto | 1995 | 1995 | 20-2068-1 | Diesel | 0 |
| Rio Grande GP-30 Diesel Engine - With Proto-Sound 2.0 | 2007 | 2007 | 20-2748-1 | Diesel | 0 |
| Rio Grande GP-40 Diesel Engine (Non-Powered) | 2004 | 2004 | 20-2522-3 | Diesel | 0 |
| Rio Grande GP-40 Diesel Engine - With Proto-Sound 2.0 | 2004 | 2004 | 20-2522-1 | Diesel | 0 |
| Rio Grande GP-9 Diesel Engine With Proto-Sound 3.0 | 2018 | 2018 | 20-20868-1 | Diesel | 0 |
| Rio Grande GP-9 Diesel Engine With Proto-Sound 3.0 | 2018 | 2018 | 20-20869-1 | Diesel | 0 |
| Rio Grande NW-2 Switcher Diesel Calf (Non-Powered) | 2006 | 2006 | 30-2667-3 | Diesel | 0 |
| Rio Grande NW-2 Switcher Diesel Engine with Proto-Soundr 2.0 | 2006 | 2006 | 30-2667-1 | Diesel | 0 |
| Rio Grande RS-3 Diesel Engine - With Loco-Sound | 2001 | 2001 | 30-2237-0 | Diesel | 0 |
| Rio Grande RS-3 Diesel Engine - With Proto-Sound 2.0 | 2001 | 2001 | 30-2237-1 | Diesel | 0 |
| Rio Grande SD-9 Diesel Engine (Non-Powered) | 2006 | 2006 | 30-2704-3 | Diesel | 0 |
| Rio Grande SD-9 Diesel Engine - With Proto-Sound 2.0 | 2006 | 2006 | 30-2704-1 | Diesel | 0 |
| Rio Grande SD-9 Diesel Engine with Proto-Sound 3.0 | 2021 | 2021 | 30-20896-1 | Diesel | 0 |
| Rio Grande SD50 Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2024 | 2024 | 20-21916-1 | Diesel | 0 |
| Rio Grande Southern Galloping Goose Diesel With Proto-Sound 2.0 | 2007 | 2007 | 30-2787-1 | Diesel | 0 |
| Rio Grande Southern Galloping Goose Diesel With Proto-Sound 2.0 | 2009 | 2009 | 30-2890-1 | Diesel | 0 |
| Rio Grande Southern Galloping Goose Diesel With Proto-Sound 3.0 | 2013 | 2013 | 30-20160-1 | Diesel | 1 |
| RJ Corman GP-20 Diesel Engine With Proto-Sound 3.0 | 2019 | 2019 | 30-20610-1 | Diesel | 0 |
| RJ Corman SD-45 Diesel Engine with Proto-Sound 3.0 | 2023 | 2023 | 30-21137-1 | Diesel | 0 |
| RJ Corman SD-45 Diesel Engine with Proto-Sound 3.0 | 2023 | 2023 | 30-21138-1 | Diesel | 0 |
|
| RJ Corman SD40-2 Diesel Engine With Proto-Sound 3.0 | 2018 | 2018 | 20-20991-1 | Diesel | 0 |
| RJ Corman SD40-2 Diesel Engine With Proto-Sound 3.0 | 2018 | 2018 | 20-20992-1 | Diesel | 1 |
| RJ Corman SW-9 Switcher Diesel Engine Calf (Non-Powered) | 2017 | 2017 | 30-20465-3 | Diesel | 0 |
| RJ Corman SW-9 Switcher Diesel Engine with Proto-Sound 3.0 | 2017 | 2017 | 30-20465-1 | Diesel | 0 |
| RJ Corman SW1200 Switcher Diesel Engine with Proto-Sound 3.0 | 2022 | 2022 | 30-21068-1 | Diesel | 0 |
| RJ Corman SW1200 Switcher Diesel Engine with Proto-Sound 3.0 | 2022 | 2022 | 30-21069-1 | Diesel | 0 |
| RMH - Ronald McDonald Rugged Rails F-3 A Unit with Operating Horn & Bell | 2008 | 2008 | 33-2035-1 | Diesel | 0 |
| RMH - Ronald McDonald Rugged Rails F-3 A Unit with Proto-Sound 2.0 | 2006 | 2006 | 33-2027-1 | Diesel | 0 |
| RMH - Ronald McDonald Rugged Rails F-3 A Unit with Proto-Sound 2.0 | 2007 | 2007 | 33-2029-1 | Diesel | 0 |
| RMH - Ronald McDonald Rugged Rails F-3 A Unit with Proto-Sound 2.0 | 2009 | 2009 | 33-2036-1 | Diesel | 0 |
| Rochester & Southern SW1200 Switcher Diesel Engine with Proto-Sound 3.0 | 2022 | 2022 | 30-21091-1 | Diesel | 0 |
| Rochester & Southern SW1200 Switcher Diesel Engine with Proto-Sound 3.0 | 2022 | 2022 | 30-21092-1 | Diesel | 0 |
| Rock & Rail GP-40 Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2019 | 2019 | 20-21203-1 | Diesel | 0 |
| Rock & Rail GP-40 Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2019 | 2019 | 20-21204-1 | Diesel | 0 |
| Rock & Rail GP-40 Diesel Engine with Proto-Sound 3.0 (Scale Wheels) | 2019 | 2019 | 22-21203-2 | Diesel | 0 |
| Rock & Rail GP-40 Diesel Engine with Proto-Sound 3.0 (Scale Wheels) | 2019 | 2019 | 22-21204-2 | Diesel | 0 |
| Rock Island Aerotrain Diesel Passenger Set with Proto-Sound 2.0 | 2006 | 2006 | 30-2675-1 | Diesel | 0 |
| Rock Island Aerotrain Diesel Passenger Set with Proto-Sound 3.0 | 2015 | 2015 | 30-20318-1 | Diesel | 0 |
| Rock Island Aerotrain Diesel Passenger Set with Proto-Sound 3.0 | 2019 | 2019 | 30-20675-1 | Diesel | 0 |
| Rock Island Alco PA ABA Diesel Set - With Proto-Sound 2.0 | 2002 | 2002 | 20-2390-1 | Diesel | 0 |
| Rock Island Alco Rs-1 Diesel Engine with Proto-Sound 3.0 | 2021 | 2021 | 30-20931-1 | Diesel | 0 |
| Rock Island Alco Rs-1 Diesel Engine with Proto-Sound 3.0 | 2024 | 2024 | 30-21284-1 | Diesel | 0 |
| Rock Island Alco Rs-1 Diesel Engine with Proto-Sound 3.0 | 2024 | 2024 | 30-21285-1 | Diesel | 0 |
| Rock Island BL-2 Diesel Engine (Non-Powered) | 2006 | 2006 | 20-2688-3 | Diesel | 0 |
| Rock Island BL-2 Diesel Engine - With Proto-Sound 2.0 | 2001 | 2001 | 20-2313-1 | Diesel | 1 |
| Rock Island BL-2 Diesel Engine with Proto-Sound 2.0 | 2006 | 2006 | 20-2688-1 | Diesel | 0 |
| Rock Island BL-2 Diesel Engine with Proto-Sound 3.0 | 2017 | 2017 | 20-20703-1 | Diesel | 0 |
| Rock Island BL-2 Diesel Engine with Proto-Sound 3.0 | 2017 | 2017 | 20-20704-1 | Diesel | 1 |
| Rock Island DL-109 Diesel Engine with Proto-Sound 2.0 | 2006 | 2006 | 20-2673-1 | Diesel | 0 |
| Rock Island DL-109/110 Diesel Engine Set with Proto-Sound 3.0 | 2012 | 2012 | 20-20229-1 | Diesel | 0 |
| Rock Island DL-110 Powered B Unit Diesel Engine | 2006 | 2006 | 20-2673-3 | Diesel | 0 |
| Rock Island E-3 AA Diesel Engine Set with Loco-Sound | 2001 | 2001 | 30-2228-0 | Diesel | 0 |
| Rock Island E-3 AA Diesel Engine Set with Proto-Sound 2.0 | 2001 | 2001 | 30-2228-1 | Diesel | 1 |
| Rock Island E-3 AA Diesel Engine Set with Proto-Sound 3.0 | 2018 | 2018 | 30-20503-1 | Diesel | 0 |
| Rock Island E-3 B Unit Diesel Engine (Non-Powered) | 2018 | 2018 | 30-20503-3 | Diesel | 0 |
| Rock Island E-3 B Unit Diesel Engine (Non-Powered) | 2001 | 2001 | 30-2228-3 | Diesel | 0 |
| Rock Island E-6 AA Diesel Engine Set with Proto-Sound 2.0 | 2006 | 2006 | 30-2713-1 | Diesel | 0 |
| Rock Island E-6 ABA Diesel Engine Set with Proto-Soundr 2.0 | 2002 | 2002 | 20-2358-1 | Diesel | 0 |
| Rock Island E-6 B Unit Diesel Engine (Non-Powered) | 2006 | 2006 | 30-2713-3 | Diesel | 0 |
| Rock Island E-8 A Unit Diesel Engine (Non-Powered) | 2019 | 2019 | 20-21249-4 | Diesel | 0 |
| Rock Island E-8 A Unit Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2019 | 2019 | 20-21248-1 | Diesel | 0 |
| Rock Island E-8 A Unit Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2019 | 2019 | 20-21249-1 | Diesel | 0 |
| Rock Island E-8 AA Diesel Engine Set 3-Rail Horn | 2000 | 2000 | 30-2187-0 | Diesel | 0 |
| Rock Island E-8 AA Diesel Engine Set with Proto-Sound 3.0 | 2020 | 2020 | 30-20701-1 | Diesel | 0 |
| Rock Island E-8 AA Diesel Engine Set with Proto-Soundr | 2000 | 2000 | 30-2187-1 | Diesel | 1 |
| Rock Island E-8 ABA Diesel Engine Set - 2-Rail | 1997 | 1997 | 20-2169-2 | Diesel | 0 |
| Rock Island E-8 ABA Diesel Engine Set - With Proto | 1997 | 1997 | 20-2169-1 | Diesel | 1 |
| Rock Island E-8 ABA Diesel Engine Set - With Proto-Sound 2.0 | 2006 | 2006 | 20-2720-1 | Diesel | 0 |
| Rock Island E-8 ABA Diesel Engine Set with Proto-Sound 3.0 | 2011 | 2011 | 20-20187-1 | Diesel | 0 |
| Rock Island E-8 B-Unit (Non-Powered) | 2011 | 2011 | 20-20187-3 | Diesel | 0 |
| Rock Island E-8 B-Unit (Non-Powered) | 2006 | 2006 | 20-2720-3 | Diesel | 0 |
| Rock Island E-8 B-Unit Diesel (Non-Powered) | 2019 | 2019 | 20-21248-3 | Diesel | 0 |
| Rock Island E-8 B-Unit Diesel Engine | 2000 | 2000 | 30-2187-3 | Diesel | 2 |
| Rock Island E-8 B-Unit Diesel Engine (Non-Powered) | 2020 | 2020 | 30-20701-3 | Diesel | 0 |
| Rock Island ES44AC Diesel Engine (DCC Ready) | 2014 | 2014 | 80-2333-0 | Diesel | 0 |
| Rock Island ES44AC Diesel Engine (Non-Powered) | 2010 | 2010 | 20-20093-3 | Diesel | 0 |
| Rock Island ES44AC Diesel Engine with Proto-Sound 2.0 (Hi-Rail Wheels) | 2010 | 2010 | 20-20093-1 | Diesel | 0 |
| Rock Island ES44AC Diesel Engine with Proto-Sound 2.0 (Scale Wheels) | 2010 | 2010 | 20-20093-2 | Diesel | 0 |
| Rock Island ES44AC Diesel Engine with Proto-Sound 3.0 | 2014 | 2014 | 80-2333-1 | Diesel | 0 |
| Rock Island ES44AC Diesel Engine with Proto-Sound 3E+ (3-Rail) | 2014 | 2014 | 80-2333-5 | Diesel | 0 |
| Rock Island ES44AC Imperial Diesel Engine With Proto-Sound 3.0 | 2017 | 2017 | 30-20411-1 | Diesel | 1 |
| Rock Island F-3 AA Diesel Set - 2 Rail | 1996 | 1996 | 20-2127-2 | Diesel | 0 |
| Rock Island F-3 AA Diesel Set - 3 Rail Horn | 1996 | 1996 | 20-2127-0 | Diesel | 0 |
| Rock Island F-3 AA Diesel Set - With Proto | 1996 | 1996 | 20-2127-1 | Diesel | 0 |
| Rock Island F-3 ABA Diesel Engine Set with Proto-Sound 3.0 | 2017 | 2017 | 30-20461-1 | Diesel | 1 |
| Rock Island F-3 B Unit - 2-Rail | 1996 | 1996 | 20-2127-32 | Diesel | 0 |
| Rock Island F-3 B Unit - 3-Rail | 1996 | 1996 | 20-2127-3 | Diesel | 3 |
| Rock Island F-3 B-Unit - 3 Rail Powered | 1999 | 1999 | 20-2127-4 | Diesel | 1 |
| Rock Island F-7 A Unit Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2023 | 2023 | 20-21836-1 | Diesel | 1 |
| Rock Island F-7 A Unit Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2023 | 2023 | 20-21837-1 | Diesel | 1 |
| Rock Island F-7 A Unit Non-Powered Diesel Engine (Hi-Rail Wheels) | 2023 | 2023 | 20-21837-4 | Diesel | 0 |
| Rock Island F-7 B-Unit Diesel (Non-Powered) | 2023 | 2023 | 20-21836-3 | Diesel | 0 |
| Rock Island F40PH Diesel Engine (Non-Powered) | 2004 | 2004 | 20-2516-3 | Diesel | 0 |
| Rock Island F40PH Diesel Engine With Proto-Soundr 2.0 | 2004 | 2004 | 20-2516-1 | Diesel | 0 |
| Rock Island FT ABA Diesel Set - With Proto-Sound 2.0 | 2011 | 2011 | 20-20161-1 | Diesel | 0 |
| Rock Island FT B-Unit Diesel Locomotive (Non-Powered) | 2011 | 2011 | 20-20161-3 | Diesel | 0 |
| Rock Island GE U30C Diesel Engine (Non-Powered) | 2010 | 2010 | 20-20075-3 | Diesel | 0 |
| Rock Island GE U30C Diesel Engine with Proto-Soundr 2.0 (Hi-Rail Wheels) | 2010 | 2010 | 20-20075-1 | Diesel | 0 |
| Rock Island GE U30C Diesel Engine with Proto-Soundr 2.0 (Scale Wheels) | 2010 | 2010 | 20-20075-2 | Diesel | 0 |
| Rock Island GP-40 Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2017 | 2017 | 20-20830-1 | Diesel | 0 |
| Rock Island GP-40 Diesel Engine with Proto-Sound 3.0 (Hi-Rail Wheels) | 2017 | 2017 | 20-20831-1 | Diesel | 0 |
| Rock Island GP-40 Diesel Engine with Proto-Sound 3.0 (Scale Wheels) | 2017 | 2017 | 22-20830-2 | Diesel | 0 |
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| Rock Island GP-40 Diesel Engine with Proto-Sound 3.0 (Scale Wheels) | 2017 | 2017 | 22-20831-2 | Diesel | 0 |