Used Hummer engines
Where can you buy a tested used Hummer engine for sale?
Car Part Headquarters supplies tested used and remanufactured Hummer engines for cars, trucks, SUVs, and vans, shipped free to a commercial address across the lower 48 and backed by a 12-month parts-replacement warranty. Tell us your Hummer’s year, model, and engine, and a specialist confirms the exact fitment before you pay.
Buying a used Hummer engine
Hummer engines are GM units, so the interchange pool is far wider than the badge implies. That is usually what makes a replacement affordable.
6.0L Vortec V8 (H2)
A GM truck V8 with a strong durability record. Because it is shared across the GM truck range, sound cores are more available than the Hummer name suggests.
3.7L inline-five (H3)
Cylinder head trouble is the recurring complaint on this engine, with valve seat wear the specific item owners and shops report. Head condition is the thing to verify on any donor, and a repaired head is not automatically a compromise if the work is documented.
Before you order
Search the interchange, not the brand. Hummer engines came out of the wider GM parts bin, and a Chevrolet or GMC donor with the same interchange number is usually easier to find and cheaper than a Hummer-badged one.
Sources: NHTSA recalls and VIN lookup · H3 cylinder head and known issues · GM truck V8 background
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Hummer engines we commonly source
We regularly source Hummer engines across the lineup - the 6.6L V8 Turbo Diesel, 6.5L V8 Turbo Diesel, 6.5L V8 Diesel, 6.2L V8, and 6.2L V8 Diesel among them. If your engine isn’t listed, tell us the year, model, and VIN and a specialist tracks down the right one.
- 6.6L V8 Turbo Diesel
- 6.5L V8 Turbo Diesel
- 6.5L V8 Diesel
- 6.2L V8
- 6.2L V8 Diesel
- 6.0L V8
- 5.7L V8
- 5.3L V8
- 3.7L
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Hummer models we fit
From daily drivers to trucks and SUVs, we match engines and transmissions to the Hummer models we service. Don’t see yours? The finder covers the full Hummer lineup.
- H2
Why buy your Hummer engine from Car Part Headquarters
Tested before it ships
Every engine and transmission is compression- and pressure-tested and inspected before it leaves the warehouse.
12-month parts-replacement warranty
Approved claims are covered by replacement or store credit for a full year. Labor is not covered unless you add a parts-and-labor plan.
Free commercial shipping
Free delivery to a commercial address or freight terminal in 5-7 business days. Residential delivery is available for an added $175.
Fitment confirmed first
A specialist confirms the correct part for your exact year, make, model, and VIN before you pay - no guesswork.
How it works
Buying a used Hummer engine, step by step
01
Tell us your vehicle
Enter the year, make, model, and part in the finder, or call. Add your VIN to pin the engine down exactly.
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Get a confirmed quote
A specialist confirms availability, mileage, and compatibility, then sends a no-obligation quote.
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Order & ship
We ship within 5-7 business days, free to a commercial address, with tracking.
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Support after the sale
Questions before or after install are handled by the same team, backed by the 12-month parts warranty.
FAQ
Used Hummer engines & transmissions
How much does a used Hummer engine cost?
Price tracks the engine family more than the model year, and on Hummer that usually means which of the 6.0L Vortec V8 (H2) and 3.7L inline-five (H3) you need. Displacement alone does not settle it, because the same badge can cover variants that differ in cost and availability. Tell us the year, model and VIN and you get a firm quote on the engine your vehicle actually takes, with availability confirmed before you pay.
Which Hummer engines do you carry?
We regularly source Hummer engines across the lineup, including the 6.6L V8 Turbo Diesel, 6.5L V8 Turbo Diesel, 6.5L V8 Diesel, 6.2L V8, 6.2L V8 Diesel, 6.0L V8. If you don't see your exact engine, tell us the year, model, and VIN and a specialist confirms the right one before you pay.
Do you sell used Hummer transmissions too?
Yes. Alongside used and remanufactured Hummer engines, we source manual, automatic, and CVT Hummer transmissions matched to your vehicle, backed by the same 12-month parts-replacement warranty.
Will the engine fit my exact Hummer?
Fitment is confirmed before you pay. Search the interchange, not the brand. Hummer engines came out of the wider GM parts bin, and a Chevrolet or GMC donor with the same interchange number is usually easier to find and cheaper than a Hummer-badged one. Give us the year, model and 17-digit VIN and a specialist matches the correct engine to your exact application.
Are your used engines and transmissions tested?
Yes. Every used engine and transmission is compression- and oil-pressure tested and put through a rigorous inspection process by automotive experts before they ship.
What warranty comes with a part?
Every engine and transmission includes a 12-month parts-replacement warranty, plus lifetime support from ASE-certified experts. Approved claims are handled by replacement or store credit - we do not issue cash refunds. Labor is not covered on the standard warranty. You can upgrade to 3-year parts and labor coverage for $499 at the time of purchase. Full warranty details are provided with your order.
Can I get a longer warranty that covers labor?
Yes. The standard coverage is 12 months on parts. For $499 you can upgrade to a 3-year warranty that covers both parts and labor, purchased at the time of your order. Ask your specialist to add it when you confirm your part.
Ready to find your Hummer engine?
Tell us the year, make, and model. A specialist confirms the right engine or transmission, availability, and mileage before you pay.