Dodge · Ram Heavy Duty
Used 6.7 Cummins Engines for Sale
Used 6.7 Cummins diesel engines for Dodge and Ram 2500 and 3500 pickups and chassis cabs, matched to your VIN. Tell us the year and model and one independent supplier quotes availability, price and shipping to Texas or anywhere in the lower 48.
- Ships to all 48 contiguous states
- Fitment checked by VIN
- Free to ask
- $3,225used, typical low end
- 2007earliest model year listed
6.7 Cummins Engine Price: Used vs Remanufactured
- 2008 Dodge Ram 25006.7L (Diesel, VIN A, 8th digit)$3,225–$8,863median $7,000 · 97 listings
- 2012 Ram 25006.7L (Diesel, VIN L, 8th digit)$4,549–$8,863median $7,750 · 91 listings
- 2019 Ram 25006.7L (Diesel, VIN L, 8th digit)$6,995–$9,500median $8,199 · 41 listings
Each used bar runs from the 25th to the 75th percentile of that version's asking prices, so half its listings fall inside it, and the dot marks the median. The supplier quotes your exact part, shipping and warranty.
These are part prices only. For labor and the total bill, see our engine replacement cost guide.
6.7 Cummins at a glance
| Engine family | Cummins B Series straight-six diesel, sold as the ISB 6.7 and later renamed B6.7Source: Wikipedia: Cummins B Series engine, Wikipedia: B6.7 |
|---|---|
| Displacement | 6,690 cc (408.2 cu in), 107 mm bore × 124 mm strokeSource: Wikipedia: Cummins B Series engine |
| Fuel system | High-pressure common-rail direct injection with 7-hole injectors; compression ratio 17.3:1Source: Wikipedia: Cummins B Series engine |
| Turbocharger | Holset variable geometry turbo (VGT), which also works as the built-in exhaust brakeSource: Wikipedia: Cummins B Series engine, Wikipedia: changes over the 5.9 |
| Emissions equipment | EGR and a diesel particulate filter (DPF)Source: Wikipedia: Cummins B Series engine |
| Bottom end | Forged steel crankshaft with 7 main bearings; gear-driven camshaftSource: Wikipedia: Cummins B Series engine |
| Oil capacity | 3 US gal (11.4 L) with filterSource: Wikipedia: Cummins B Series engine |
| Output | 350 hp / 650 lb-ft in 2007.5-and-newer pickups with the 68RFE automatic; up to 400 hp / 1,000 lb-ft after the 2019 updateSource: Wikipedia: Cummins B Series engine |
Which 6.7 Cummins do you have?
Pickup with automatic or manual
In the 2007.5-and-newer 2500 and 3500 pickups, the 6.7 is rated 350 hp and 650 lb-ft with the six-speed 68RFE automatic, and 610 lb-ft with the G56 six-speed manual.
Source: Wikipedia: Cummins B Series engine3500 Cab & Chassis
The 2007-and-newer 3500 Cab & Chassis trucks get a 305 hp / 610 lb-ft version, with either the Aisin AS68RC automatic or the G56 manual.
Source: Wikipedia: Cummins B Series engine2008 4500/5500 chassis cabs
The 2008 4500 and 5500 medium-duty chassis cabs get a 350 hp / 610 lb-ft version.
Source: Wikipedia: Cummins B Series engine2019 update
Cummins updated the engine for 2019, raising output to as much as 400 hp and 1,000 lb-ft. Hollander's interchange for 2019–2020 Ram 2500s (300-10435) differs from the numbers for 2008 and 2011–2012 trucks.
Source: Wikipedia: Cummins B Series engine, Hollander: 2019 Ram 2500 6.7L optionsISB 6.7 or B6.7
The B6.7 is the same engine renamed. Wikipedia says the main changes over the years were emissions equipment and some power ratings. The diesel B6.7 ended production in 2026 and was replaced by the B7.2.
Source: Wikipedia: B6.7Check before you buy a used 6.7 Cummins
- Match the year range. Used yards file the 6.7 under different interchange numbers for different model-year ranges, and the 2019 update raised output. Give the supplier your VIN so the engine matches your truck's calibration.
- Pickup or cab and chassis? The 3500 Cab & Chassis and the 4500/5500 trucks used their own ratings of the 6.7. Tell the supplier exactly which truck it is going into.
- Ask about the turbo and exhaust brake. The variable geometry turbo doubles as the exhaust brake. Ask whether the turbo comes with the engine and whether the exhaust brake was working on the donor truck.
- Ask what's included. Long block only, or complete with turbo, injectors, EGR parts and harness.
- Get mileage, testing and warranty in writing. Ask for the donor vehicle's mileage, how the engine was tested, the warranty term and the freight cost to your ZIP before you pay.
Known 6.7 Cummins wear points
- Wikipedia describes the variable geometry turbo as an extremely common problem on the 6.7 ISB, usually noticed when the truck loses its exhaust brake. (Wikipedia: changes over the 5.9)
Vehicles that used the 6.7 Cummins
See the sourced table (1 rows)
| Vehicle | Model years |
|---|---|
| Dodge / Ram 2500 and 3500 pickupYard donor records confirm 2500s from 2008, 2011–2012 and 2019–2020 | 2007.5 and newer |
Heavy-duty pickups are largely absent from the U.S. EPA vehicle records, and Wikipedia gives no year-by-year Ram table for the 6.7, so this table is kept to the one row both Wikipedia and used-yard donor records support. Wikipedia also names the 3500 Cab & Chassis and the 2008 4500/5500 chassis cabs (see the versions above). Wikipedia is not consistent on when the ISB name ended, so the supplier confirms the exact engine by VIN.
6.7 Cummins questions
How much does a used 6.7 Cummins engine cost?
Used-yard asking prices for a 6.7 Cummins typically ran $3,225 to $9,500 on October 21, 2026. That range runs from the lowest version's 25th percentile to the highest version's 75th percentile, across 3 versions (229 priced listings). Prices vary by version, mileage and shipping, so the supplier quotes your exact part.
How is the 6.7 Cummins different from the 5.9?
The 6.7 has a larger bore and stroke, a variable geometry turbo that also acts as the exhaust brake, and EGR plus a diesel particulate filter. Wikipedia notes the 5.9 common-rail was the last Ram diesel that did not need emissions equipment.
Is the B6.7 the same engine as the ISB 6.7?
Yes. Cummins renamed the ISB 6.7 as the B6.7; the changes over the years were mainly emissions equipment and some power ratings. The diesel B6.7 ended production in 2026, replaced by the B7.2.
What does a lost exhaust brake mean on a 6.7 Cummins?
On the 6.7 the variable geometry turbo also works as the exhaust brake, and Wikipedia says turbo problems are usually spotted when the exhaust brake stops working. Ask the supplier whether the turbo is included and how it was checked.
Related engines and transmissions
Delivering to Texas? See Houston, Dallas, San Antonio or El Paso.