Product Description
CPP Extreme Duty G56 Transmission for 2005–2018 Dodge Ram 2500/3500
- Heavy-duty 6-speed built for Cummins torque
- Upgraded/hardened internals and precision-set clearances
- Direct fit for 2005–2018 Ram 2500/3500 (2WD/4WD)
- 3-year, unlimited-miles craftsmanship warranty
Built to work. CPP’s Extreme Duty G56 is engineered for tuned diesels, frequent towing, and serious mileage. Each unit is assembled with premium components, verified to tight tolerances, and road-tested for shift quality before it leaves our shop.
Why This G56 Beats “Reman Basic”
- Upgraded wear items selected for diesel load and longevity.
- Direct fitment by year and drivetrain (2WD/4WD) with matched shifter/top cover.
- Quality you can prove: Documented build sheet and end-of-line checks (shaft runout, endplay, shift quality).
- Real warranty: 3-year, unlimited-miles craftsmanship coverage from CPP.
- USA assembly & testing
- Phone tech support from diesel specialists
- Core pickup & freight options available
Vehicle Fitment
Designed for 2005–2018 Dodge Ram 2500/3500 equipped with the G56 manual transmission. Choose your year and 2WD/4WD configuration at checkout.
What’s Included
- Fully built G56 Extreme Duty transmission
- Matched shifter/top cover
- Fill & break-in guide
- Core return instructions
Recommended Supporting Parts
Protect your investment and finish the install right:
- G56 clutch kits for towing/power: (Shop G56 Clutches | Valair HD Organic Kit | South Bend G56-OR-HD)
- Hydraulics: Pre-bled master/slave or slave-only (choose by year). (Dorman CS650156 G56 Slave)
- Bearing/Seal & small parts: Ideal when refreshing related components or spares. (07.5–12 G56 Parts | 13–18 G56 Parts)
Compare Your Options
| Feature | Factory G56 (Used/Core) | Typical Reman Basic | CPP Extreme Duty |
|---|---|---|---|
| Internals | OEM, unknown wear | Mixed replacement | Upgraded/hardened selections |
| QC & Testing | None | Basic checks | Runout/endplay/shift checks + build sheet |
| Warranty | N/A | Limited | 3-yr unlimited-miles craftsmanship |
| Best For | Light use | Stock daily | Towing, tuned diesels, longevity |
Options & Specs
- Configuration: 2WD or 4WD
- Matched top cover/shifter: We supply the correct parts for your year
- Built for diesel duty: Gearsets and wear items chosen for Cummins torque
Shipping & Core
We offer flexible freight options and core handling. Choose to ship your core first or add a refundable core charge to speed up delivery. Core return instructions are included.
Warranty Information
3 YEAR UNLIMITED MILES CRAFTSMANSHIP WARRANTYProduct Videos
Custom Field
Product Reviews
2 Reviews Hide Reviews Show Reviews
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Long wait but worth it!
Have 2500 miles on it now and it still shifts smooth and does not make any noises. Transmission took a month longer to get than what was told when order was placed but was well worth it in the end.
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It shifts smooth as silk
This trans shifts smooth as silk. No issues with the gears. I would definitely recommend the product to others. The only issue is the length of time it takes to get the product.
