Ram owners tend to be loyal to one thing above all: the Cummins. When it finally gives up, most of them want another one, not a different truck. If that’s you, we have a 6.7 Cummins engine for sale, tested and ready to ship anywhere in the world.
Ready to buy? See the price, photos and stock for our fairly used 6.7 Cummins engine for sale in the shop.
Below you’ll find the specs, the trucks it fits, what tends to go wrong, and how buying from us works. We sell complete engines and we confirm the fit before you pay.
Table of Contents
Why People Still Hunt for a 6.7 Cummins Engine for Sale
The 6.7 is a straight-six turbo diesel that’s been in Dodge and Ram heavy-duty trucks since the middle of 2007. It took over from the 5.9 and kept the same basic idea: one cast iron head, a stout block, a gear-driven cam and six cylinders in a row. It’s heavy and it’s simple, and that’s why people like it.
A lot of these engines run past 300,000 miles. But they don’t live forever, especially after years of towing, hard tuning or neglect. When one does go, the rest of the Ram is often fine. Replacing just the engine makes a lot more sense than buying a new truck, and a tested 6.7 Cummins engine for sale is usually the fastest way back on the road.
There’s also the swap crowd. People put the 6.7 into older Dodges, Fords, Chevys and even custom builds because of its torque and simplicity. We sell to them too.
6.7 Cummins Engine Specifications
Every 6.7 Cummins engine for sale we list is checked against these numbers. Output varies with the year and whether it’s a standard or high-output engine.
| Engine | Cummins 6.7L turbo diesel (ISB 6.7 family) |
| Layout | Inline six, turbocharged and intercooled |
| Displacement | 6.7 L (408 cu in) |
| Bore x stroke | 107 mm x 124 mm |
| Block | Cast iron (compacted graphite iron from 2019) |
| Head | Cast iron, single head |
| Valvetrain | OHV, 4 valves per cylinder (24 valves) |
| Fuel system | Bosch high-pressure common rail |
| Turbo | Holset variable-geometry |
| Power | 350 hp (2007.5) up to 420 hp on later high-output trucks |
| Torque | 650 lb-ft (2007.5) up to 1,075 lb-ft on later high-output trucks |
| Emissions | DPF and EGR; SCR with DEF on 2013 and later pickups |
| Years | 2007.5 to present |
Why the inline six matters
A straight six has fewer moving parts than a V8, one head instead of two, and a crank that’s naturally balanced. It makes its torque low in the rev range, right where a tow vehicle needs it. That design is a big reason the Cummins has the reputation it does.
Fuel system
The 6.7 runs Bosch high-pressure common rail. Trucks from 2007.5 to 2018 use a Bosch CP3 pump, which has a strong track record. From 2019 the engine got a new pump along with the new block. Fuel quality matters on both, but the earlier setup is especially well liked.
Turbo and emissions
A Holset variable-geometry turbo gives good boost at low speed and doubles as an exhaust brake. The 6.7 was the first Ram diesel with a DPF from the start. DEF arrived on pickups in 2013.
The 6.7 belongs to the Cummins B Series, the same family as the 5.9, the 6BT and the ISB.
How the 6.7 Cummins Changed Over the Years
- 2007.5 to 2012: the first 6.7 trucks. DPF and EGR but no DEF. Early emissions parts and turbos gave some owners trouble.
- 2013 to 2018: DEF arrives on pickups. A high-output version appears for trucks with the heavy-duty automatic, and torque keeps climbing.
- 2019 on: new compacted graphite iron block that’s lighter, new fuel pump, new turbo, and a big jump in torque on the high-output engine.
Parts such as the turbo, fuel pump, sensors and wiring don’t always swap between these groups. We match each 6.7 Cummins engine for sale to your VIN instead of guessing by year.
Which Trucks Use the 6.7 Cummins?
- Dodge and Ram Heavy Duty 2500, mid-2007 on
- Dodge and Ram 3500 pickup, mid-2007 on
- Ram 3500, 4500 and 5500 chassis cab
- Medium trucks, buses and equipment running the ISB 6.7 (different calibrations and ancillaries)
Manual and automatic trucks can run different ratings, and the chassis cabs have their own calibration. Tell us exactly what you drive and we’ll match the right 6.7 Cummins engine for sale to it.
5.9 or 6.7: Know Which One You Have
The 5.9 ran in Rams until early 2007, and the 6.7 took over partway through the 2007 model year. That’s why people say “2007.5”. The two look alike at a glance but the 6.7 has a different fuel system, turbo and emissions setup. Fitting a 6.7 into a 5.9 truck is possible but it’s a proper project, not a simple swap.
Your VIN settles it. Send it over and we’ll confirm whether your truck had the 5.9 or the 6.7.
Where Our 6.7 Engines Come From
Most of our stock comes from Ram trucks written off after accidents or retired from fleets. Plenty of those trucks were scrapped for body damage that never touched the engine. We record the donor details for every 6.7 Cummins engine for sale, with mileage where we have it, and we tell you if the donor was tuned or modified.
What Comes With Our 6.7 Cummins Engine for Sale
- Block with crank, rods and pistons
- Cylinder head with valvetrain
- Fuel pump, rail and injectors (condition noted on your quote)
- Holset variable-geometry turbo
- Intake and exhaust manifolds, EGR valve and cooler
- Most ancillaries on most units
- Compression results, photos and crating on a pallet
The transmission, ECM and harness aren’t included unless we agree it in writing.
How We Test Every Engine
- Compression test on all six cylinders.
- Fuel system checked for contamination.
- Oil checked for coolant, fuel or metal.
- Turbo checked for shaft play and vane movement.
- Head, block and EGR cooler checked for cracks and leaks.
- Photos sent to you, and video on request.
If an engine doesn’t pass, it never becomes a 6.7 Cummins engine for sale on our site.
Used, Reconditioned or Rebuilt?
Used
A fairly used 6.7 Cummins engine for sale is tested and sold as it came out of the donor. It’s the cheapest and quickest option, and with a healthy donor it’s often all you need.
Reconditioned
New gaskets and seals, a cleaned fuel system and worn parts replaced. It costs more but suits a truck that tows heavy every week.
Rebuilt
Torn down, machined where needed and reassembled with new internal parts. The most expensive and slowest option. Our guide to remanufactured vs rebuilt engines goes into the details, and the long block vs short block guide helps if you only need part of an engine.
Common 6.7 Cummins Problems
The bottom end of a 6.7 is very tough. Most trouble comes from what’s bolted to it.
EGR valve and cooler
The EGR system gets clogged with soot, valves stick and coolers can leak. It’s the most common complaint on these engines, especially trucks that idle a lot.
DPF and DEF faults
Short trips and idling clog the DPF. DEF systems throw codes from bad sensors, heaters and poor fluid. Annoying, but almost never a reason to replace the engine.
Turbo issues
Variable-geometry turbos can stick when soot builds up on the vanes, and some early trucks had actuator trouble. A worn turbo shows up as low power, smoke or strange noises.
Injectors
Injectors wear, and bad fuel speeds that up. Hard tuning is hard on them too. Rough running, smoke and poor fuel economy are the usual signs.
Grid heater and wiring
Grid heater bolts and wiring can fail on some trucks. It’s a known issue and worth checking during any engine swap.
7 Checks Before You Buy Any 6.7 Cummins Engine for Sale
Whoever you buy from, these checks will save you money and stress.
- Match the year group. 2007.5 to 2012, 2013 to 2018 and 2019 on engines differ in important ways.
- Standard or high output? Know which one your truck had and which one you’re buying.
- Ask for compression numbers. Real numbers for all six cylinders, not a promise.
- Ask about tuning. A donor that ran a hard tune or had emissions parts removed can have tired injectors and a stressed turbo.
- Look at the oil. Coolant or fuel in the oil is a warning sign.
- Get photos of the actual engine. With the data plate visible, not stock pictures.
- Read the warranty. Know what’s covered and what you have to do to keep it valid.
Any seller with a decent 6.7 Cummins engine for sale should answer all of these without fuss. We do it as standard.
Check your own truck too. If the old engine died from overheating, contaminated fuel or a cooling problem, fix the cause first. A good 6.7 Cummins engine for sale won’t last long in a truck with the same problem still waiting for it.
Repair or Replace?
EGR faults, a sticky turbo, a bad injector or a clogged DPF are repairs, not reasons for a new engine. A cracked head, a dropped valve, low compression across several cylinders or a knocking bottom end are different. At that point a tested 6.7 Cummins engine for sale usually works out cheaper than a rebuild, and quicker too.
Towing With a 6.7 Cummins
This engine was made to pull. Gooseneck trailers, fifth wheels, equipment and horse trailers are all normal work for it. After a swap, drive unloaded for the first few hundred miles and watch for leaks and odd readings. When you start towing again, keep an eye on transmission temperature. The 6.7 makes so much torque that the gearbox often becomes the weak link.
Swapping a 6.7 Into Another Truck
The 6.7 is a popular swap engine. People fit it into older Dodges, Fords, Chevys, Land Cruisers and custom builds. It’s doable, but plan for engine mounts, a suitable transmission, a standalone harness or engine controller, cooling, and exhaust. If you’re doing a swap, tell us which vehicle it’s going into and we’ll help you pick the right 6.7 Cummins engine for sale. An earlier engine is often easier to work with than a 2019 or later one.
Living With an Early 6.7
The first 6.7 trucks, from 2007.5 to 2012, have a bit of a mixed name. The engine itself was strong, but the early emissions equipment wasn’t. Owners dealt with clogged DPFs, EGR trouble and frequent regenerations, especially on trucks that idled a lot or did short runs. Fuel economy also took a hit compared with the old 5.9.
Most of those problems have known fixes now, and a well-kept early truck can be a good one. If yours is from that era, an early 6.7 Cummins engine for sale is usually the simplest replacement, because everything around it will plug straight in. Moving to a later engine means changing more than you might expect.
Tuning and the 6.7
The 6.7 responds well to tuning, and plenty of owners run more power than stock. It’s worth knowing what that does to an engine over time. More fuel and boost means more heat, more stress on the turbo, and harder work for injectors and head gasket. A mild tune on a well-kept engine is one thing. Years of heavy tuning and towing is another.
When we sell a 6.7 Cummins engine for sale, we tell you if we know the donor was tuned. If you plan to add power after the swap, tell us, and we’ll point you towards an engine with a healthy turbo and fuel system. We’ll also remind you to keep it legal where you live.
What Happens on Delivery Day
Your engine arrives bolted to a pallet and wrapped against weather. Check the packaging before you sign for it. If anything looks damaged, take photos and write it on the delivery note. Then inspect the engine itself and compare it with the photos we sent.
Keep the pallet and fixings until the engine is in and running. Store it somewhere dry if it won’t be fitted straight away, and keep the openings covered so dirt and water stay out. If anything doesn’t look right, contact us before fitting. Problems are much easier to sort before a 6.7 Cummins engine for sale goes into the truck than after.
Manual or Automatic Trucks
Ram sold the 6.7 with both manual and automatic gearboxes for years, and the engines weren’t always set up the same way. Manual trucks often ran a lower torque rating to protect the clutch and gearbox. Automatic trucks, especially later ones with the heavy-duty automatic, got the high-output engine.
That matters when you’re replacing an engine. The flywheel or flexplate, the engine computer and sometimes the rating have to suit your transmission. Putting a high-output engine behind a manual box that was never built for it is asking for a broken clutch or worse. Tell us which transmission your truck has and we’ll match the 6.7 Cummins engine for sale to it, with the right parts on the back of the crank.
Fitment Checklist
Send us these and we’ll confirm the right 6.7 Cummins engine for sale:
- Truck model and year
- Full VIN
- Manual or automatic, and which transmission
- Standard or high output
- Pickup or chassis cab
- Emissions rules where you are
Emissions and Local Rules
We supply the 6.7 with its emissions parts as Cummins designed them. Rules on imported engines vary a lot from country to country, so check before you order. We won’t advise removing emissions equipment.
Installation Tips
- New fuel filters and clean, good-quality diesel.
- Drain and clean the tank if the fuel was contaminated.
- Prime the fuel system before first start.
- Fresh oil, filter and coolant.
- Check the grid heater and its wiring.
- Check the EGR, DPF and DEF systems and clear old codes.
Any good diesel shop fitting your 6.7 Cummins engine for sale will know these steps, but it doesn’t hurt to ask.
Looking After Your 6.7
Change oil and fuel filters on time and drain the water separator. Use good diesel and fresh DEF. Let it warm up before you tow and give it a minute to cool after a hard pull. If it idles a lot or only does short runs, take it on the highway now and then so the DPF can regenerate.
Do that, and a 6.7 Cummins engine for sale from us should give you a very long working life.
Who Buys a 6.7 From Us
Hotshot drivers, contractors, farmers, ranchers and repair shops make up most of our buyers. We also ship a lot overseas to people running imported Rams, and to builders doing swaps. Tell us what you’re doing and we’ll recommend the engine that fits.
What a Healthy Used 6.7 Looks Like
Even compression across all six cylinders. Clean oil. A turbo with no real play and vanes that move freely. No cracks or serious leaks. Every 6.7 Cummins engine for sale we ship meets these, and we’ll show you the proof.
Importing a Ram Diesel Engine: Mistakes to Avoid
- Buying without checking the year group and rating.
- Forgetting the ECM may need to match the engine.
- Ignoring local emissions and import rules.
- Comparing prices without counting freight and duty.
- Buying from someone who won’t show the actual engine.
Price: What Affects It
The price of a 6.7 Cummins engine for sale depends on the year group, mileage, condition, whether it’s standard or high output, what’s included, and whether you want it used, reconditioned or rebuilt. Freight depends on where it’s going. We quote it all up front. Our guide to buying a used diesel engine explains more.
Worldwide Shipping on Every 6.7 Cummins Engine for Sale
We ship by truck across North America and by sea or air to South America, the Caribbean, Europe, the Middle East, Africa, Asia, Australia and New Zealand, with tracking. Duties and local fees are paid by the buyer. See our shipping policy.
Warranty
Every 6.7 Cummins engine for sale is covered against internal mechanical failure, with the terms written on your quote. Full details are in our refund and returns policy.
Fleets and Repeat Buyers
If you run several Rams, ask about buying more than one engine. Shipping together usually cuts the freight cost per engine. A spare on the shelf means one breakdown doesn’t stop a truck for weeks. Repair shops can ask to be told first when a good 6.7 Cummins engine for sale comes in.
Why Buy From NJ Global Auto Parts
We test our engines, tell you what we find, and ship them to buyers all over the world. We check the fit before we take your money. You get photos of the actual engine, a written quote, tracking, and a warranty in writing. If something’s not right, you talk to people who know diesels.
Other Diesel Engines We Supply
We also supply the 6.7 Powerstroke, the Duramax LML, the Cummins ISB, Cummins 6BT, Cummins 4BT and Cummins QSB. Comparing brands? Read our 6.7 Powerstroke buyer’s guide and our Cummins ISB guide, or browse all Cummins engines and the full shop.
Frequently Asked Questions
Is the 6.7 Cummins reliable?
Yes. The core engine is one of the toughest light-duty diesels around. Most problems come from emissions parts, turbos and injectors rather than the block or crank.
Will a 6.7 fit my 2005 Ram?
Not as a straight swap. 2003 to early 2007 trucks used the 5.9, and fitting a 6.7 needs extra parts and wiring.
Is a 6.7 Cummins engine for sale cheaper than rebuilding mine?
Usually, after serious internal damage. A rebuild means machining, parts and a lot of labour. A tested engine is often cheaper and faster.
Can you supply the transmission too?
Sometimes. Ask and we’ll check.
Does it come with injectors?
Normally, yes. Their condition is written on your quote.
How do I order?
Add the engine to your cart from the product page, or send your VIN through our contact page. You can also call +1 (209) 733-0882 or WhatsApp +1 209 690 5983.
Get Your Ram Back on the Road
Your truck was built to work, not sit. If you need a 6.7 Cummins engine for sale that’s been properly tested, matched to your VIN and shipped with tracking, get in touch. We’ll confirm the fit, send photos and give you a straight quote, wherever you are.