We check every cylinder has strong, even pressure. One weak cylinder and the engine is rejected.
Must pass25,000+ engines in stock · ships nationwide
See It. Approve It.
We Ship It.
Every engine is compression tested before it ships. You'll see real photos of your actual engine before it ships, and every order includes a 6-month warranty. No guessing. No surprises.
Free nationwide freight6-month warrantyPhoto approvalVIN-matched fitment
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- Engines in stock Live verified inventory
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- Makes covered VIN-matched fitment
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- Photo approved Before every shipment
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- Standard warranty From the delivery date
Trusted & protected
Order with confidence
Your purchase is protected from start to finish.
Every order includes our standard warranty, quality assurance, and shipping support — with no hidden charges or surprise add-ons.
Quality check
Tested. Verified. Ready to perform.
Every used engine is carefully inspected and tested before shipping.
We run six checks on every engine. If it fails any one of them, we don't sell it — it never reaches your driveway.
✓ Six checks · every one must pass
Confirms the rings, valves and head gasket are sealing properly.
Must passA live reading is taken and checked against the factory figure.
Must passWe look for any sign the engine was ever run hot.
Must passInternals checked for wear, scoring and damage.
Must passTrue mileage confirmed and written onto the work order.
Must passHow every engine is prepared
6 Checks Before Your Engine Ships
Every engine goes through our complete inspection process before shipping. Each unit is also tracked from testing to delivery, so you know exactly what you're getting.
01Step one
VIN-verified sourcing
Your 17-digit VIN tells us exactly which engine your vehicle left the factory with — manufacturer, model, body style, engine code, model year and assembly plant. We decode all of it and match against live inventory before a unit is pulled.
VIN verified before your order is confirmed
- Exact engine or transmission variant matched
- Compatibility checked for your specific vehicle
- Fitment confirmed before the part is shipped
- Helps prevent ordering the wrong part
- Verified by our team — no guesswork
We use your VIN to make sure you receive the correct part for your vehicle. It's one more step we take to give you confidence before you buy.
02Step two
Compression & leak test
An engine can look immaculate and still be worn out inside. These two tests are how we tell the difference — and any unit that fails either one never reaches your quote.
- CompressionEvery cylinder tested with a calibrated gauge against OEM spec
- UniformityReadings compared across cylinders — one weak cylinder rejects the unit
- Leak-downSeal integrity checked at the rings, valves and head gasket
- Oil conditionInspected for metal, coolant and sludge — early signs of wear
- Heat tabsFactory tabs checked for evidence the engine was ever run hot
Both tests must pass before an engine is cleared. Results travel with the unit on its work order, so you can ask for them at any time.
03Step three
Pressure wash & detail
Grime hides cracks, weeping seals and casting damage. Cleaning isn't cosmetic — it's what makes a proper inspection possible, and it's why the photographs you approve actually show you something.
- DegreaseOil, road grime and old sealant removed from every external surface
- InspectBlock, heads and manifold checked for cracks and casting damage once clean
- Seal checkWeeping gaskets and seals become visible only on a clean unit
- DetailCovers, manifold and block finished to a consistent standard
- PhotographShot on the pallet for your approval — the actual unit, never a stock image
A clean engine is easier to install and easier to diagnose later. Your mechanic starts with a unit they can actually see.
04Step four
Your photo approval
This is the step that separates us from a salvage yard. Before your unit is crated, we photograph it properly and send the pictures to you. Nothing ships until you say it can.
- PhotographedClear, detailed shots of the actual unit — never a stock image
- Sent to youBy text or email, usually the same day the unit is cleared
- You reviewTake your time, or forward them to your mechanic first
- You approveOne reply and it ships. No reply and it stays on the dock
- Not happy?Say so and we source another unit, or refund you in full
You are the last check before shipping — not the first person to find out something was wrong.
05Step five
Palletized & insured
An engine weighs several hundred pounds and travels on a freight network built for pallets, not parcels. How it leaves our dock decides what condition it arrives in.
- PalletMounted on a hardwood pallet sized for the unit, not a spare offcut
- StrappedRatchet-strapped to the deck so nothing shifts in transit
- WrappedProtected against weather and handling damage on the dock
- LabelledOrder details and handling marks fixed to the pallet, not just the paperwork
- InsuredCovered for the full order value from our dock to your address
If a shipment is damaged in transit, we file the carrier claim ourselves. That's our job, not yours.
06Step six
Specialist follow-through
Most suppliers go quiet the moment the freight leaves. One named person owns your order from the first quote to confirmed delivery — the same specialist, reachable directly, with your file in front of them.
- One contactNo ticket queue, no repeating your VIN to a new person each time
- Delivery confirmedWe check the unit arrived safely and on time, rather than assuming it did
- Installer supportSpecs, torque figures or a call with a technician while your mechanic works
- Warranty on fileYour order, invoice and inspection record stay on hand if you ever need them
- Your feedbackWe ask how it went — and act on the answer
Support runs 24 hrs, Monday to Saturday. Call or text and you reach a person, not a script.
Browse inventory
Start With Your Vehicle Make
Browse available engines by make. We'll help verify compatibility before you order.
Why American Motor Supply
Why Buy From Us?
Six ways we make sure you get the right part with confidence — and one honest thing we won't pretend.
What matters
Our standardAmerican Motor SupplyEvery Engine · every order
The alternativesTypical yards & brokers
Photos before shipment
Real pallet photos of your exact unit
Stock images
Photo approval
Always — nothing ships until you say so
Ships without asking
Testing
Shift-tested, every transmission
Often pull-and-ship
Warranty coverage
6 months from delivery, included
30–90 days, if any
Freight packaging
Palletized, strapped, insured
Loose or basic wrap
Dedicated specialist
Same person, quote to delivery
Ticket queue
Brand-new OEMHonest answer
Used only — tested and photo-approved
Go to a dealership
6/7in our favour — and the one that isn't, we'll tell you straight.
Find my usedShop by engine type
Not Sure Which Engine You Need?
Choose your engine type, and we'll verify your VIN to make sure you get the right fit for your vehicle.
Gas engines
Four-cylinder, V6 and V8 gasoline units for cars, SUVs and trucks.
Browse →Diesel engines
Power Stroke, Duramax and Cummins diesel units, fully tested.
Browse →Turbo engines
Turbocharged and performance units, VIN-verified for exact fitment.
Browse →Heavy-duty truck
F-250/350, Silverado HD, RAM 2500/3500 and Super Duty units.
Browse →V8 engines
High-output V8s for trucks, vans and performance builds.
Browse →Hybrid engines
Hybrid and eco units for late-model vehicles.
Browse →30Day
30-day Return and refund
If you change your mind, you may return an uninstalled and unmodified unit within 30 days of delivery. If a VIN-verified engine doesn't fit your vehicle, the return is entirely on us. [CONFIRM — must match the warranty page.]
View full warranty terms →Common questions
Questions? We've Got Clear Answers.
Everything you need to know about compatibility, testing, warranty, shipping, and your order — so you can buy with confidence.
FitmentWhat if the engine doesn't fit?
Every engine is VIN-matched before it ships — we check the engine code, build date and trim, not just year, make and model. If a VIN-verified unit doesn't fit, we replace it or refund in full and cover the return freight.
InspectionDo I really see photos before it ships?
Yes, every time. The unit is pressure washed, palletized and photographed, and those photographs go to you for approval. If something looks wrong, say so and the shipment stops.
DeliveryHow long does delivery take?
Prep, testing and photography take 3–5 business days from your approval. Freight transit is typically 2–3 days on top of that, fully tracked door to door.
WarrantyWhat does the warranty cover?
6 months as standard from the delivery date, covering internal components. External accessories and consumables are excluded. Full terms are on the warranty page.
PricingIs shipping really free?
Free palletized freight to the lower 48, with no minimum order and no fuel surcharges. [CONFIRM residential liftgate, Alaska and Hawaii.]
TestingHow is each engine compression tested?
Every cylinder is tested with a calibrated gauge against OEM spec, and leak-down testing checks valve and ring seals. Only Grade A results are cleared to ship.
Ways to reach us
Need Help? Talk to a Parts Specialist.
Whether you're finding the right part, checking compatibility, or have questions about your order, our team is here to help — 24 hours a day, Monday through Saturday.
Your Engine is probably already in stock
The Right Part.
Verified Before You Buy.
Share your VIN and our specialists will match the right used transmission or engine to your vehicle. Get a free quote with compatibility verified before you order — no pressure, no obligation.
Tell us your budget and we'll send 3–5 options at different mileages
Real specialists · no botsNo spam, everFree quote · no obligation