01
Step 1
Payment Authorization
Your order is confirmed and logged.
Engine Warranty
DOC / APS-WARRANTY-ENG-2026 · Sec. 01–08
In Force
Auto Power Source · Legal & Coverage Notice
The Engine Warranty.
Protected · VIN-Matched · Compression-Tested · 1–36 Month Coverage
We stand by our used engines. Each one comes with a simple, clear warranty to give you peace of mind from the moment you order — and you see HD photos of your exact engine before it ever ships.
Article I · Coverage Duration
How long is the warranty?
Coverage length depends on the engine's manufacturing era — newer engines carry longer warranties because their components have aged less. Some premium parts qualify for up to 36 months of coverage.
Tier 01
Made in 1990 or earlier:
1
Month
Tier 02
Made from 1991 to 2000:
3
Months
Tier 03
Made from 2001 to 2025:
6
Months
Tier 04 · Premium
Some parts are eligible for a warranty of up to
36
Months
Tier assignment is determined by the engine's model year. Premium 36-month coverage is offered on select late-model, low-mileage units — your specialist will confirm the exact term at quote time. The warranty term stated on your invoice controls. Coverage begins on the date of purchase and is parts-only: replacement of the covered unit, with labor, towing, rental, storage, and fluid costs excluded unless a labor protection plan was purchased in writing.
Article II · Pre-Shipment Photo Approval
You see it before it ships.
Every order follows a strict 6-step fulfillment process. Nothing leaves our facility until you've seen HD photos of your exact unit and approved them in writing.
02
Step 2
Final Quality Inspection
Compression / cylinder testing on your exact unit.
03
Step 3
Dismantling & Cleaning
Professionally removed and prepped for freight.
04
Step 4
HD Photos Shared With You
Sent by text or email for your review.
05
Step 5
Your Written Approval
Your go-ahead is recorded before dispatch.
06
Step 6
Palletizing & Freight Dispatch
Strapped, wrapped, and shipped — typically 3–5 business days in transit.
§ Guarantee
Refund Before Shipment
100% Refund If You Reject the Photos
If you review the pre-shipment photos and reject the part before freight dispatch, you receive a 100% full refund — zero cancellation or restocking fees.
Your written photo approval is what releases your order for shipping. Nothing ships without it.
§ In Transit
Cancellation After Approval
Cancellations After Approval or In Transit
Once you've given written photo approval and the carrier has dispatched your shipment, actual outbound and return freight costs (approximately $350–$400 each way) are non-refundable and will be deducted from any refund.
Article III · Return Terms & Conditions
The fine print, without the fine print.
Four clauses every buyer should read before signing for delivery. Plain language, no surprises.
§ A · Cancellations
Clause A
Order Cancellations Policy
You can cancel your order within 24 hours of payment and get a full refund. You also get a full refund at any point before dispatch if you reject the pre-shipment photos (see Article II).
After 24 hours, we begin preparing your engine for shipment. If you cancel after this time for any other reason, the following charges will apply:
- 20% restocking fee
- Round-trip freight cost (approximately $350–$400 each way), if your part is already shipped
§ B · 30-Day Window
Clause B
30-Day Return Window
Let us know about any visible damage, fitment discrepancy, or issue in writing within 30 days from the date of purchase, with the unit still uninstalled and in its original delivered condition. We can't take returns after 30 days from the date of purchase.
All returns require a written Return Authorization (RMA) from us before the part ships back. Returns sent without an RMA cannot be accepted at our dock.
Please note: If you send the engine back even though it was delivered in good shape (changed mind, ordered wrong part, no issue found), it counts as a canceled order. In that case the 20% restocking fee applies and round-trip freight remains your responsibility.
Check out our Return Policy here.
§ C · Delivery Day
Clause C
Delivery Inspection & Freight Receipt (BOL)
Inspect the crate and unit before signing the carrier's Bill of Lading (BOL). The driver must wait while you or your mechanic check for housing cracks, broken ears, or bent components.
- If any damage is found, write "RECEIVED DAMAGED — [describe damage]" on the BOL before signing.
- Send us photos of the damage and the noted BOL within 48 hours of delivery.
- Damage discovered after the driver leaves (concealed transit damage) must be reported within 48 hours of delivery with photos of the unit and the packaging.
Freight carriers reject physical-damage claims on a clean signed BOL. If you sign without noting damage and don't report concealed damage within 48 hours, transit-damage claims cannot be honored.
§ D · Heat Tabs
Clause D
Heat Tabs — Strict Void Condition
Every engine ships with heat tabs: heat-sensitive indicators installed on the block whose center melts permanently once the engine overheats. They exist for one purpose — to detect overheating, the single most common cause of engine failure after installation.
Inspect the heat tabs as soon as the engine arrives. If any tab is missing at delivery, report it to us in writing within 48 hours, before installation, so we can record it. Tabs must remain intact, unmelted, and unaltered throughout the warranty period, and intact heat tabs are required evidence for every warranty claim.
STRICT VOID: If the heat tabs are found melted, missing, or tampered with at any point after delivery, this warranty is automatically NULL AND VOID. A melted heat tab is conclusive evidence the engine overheated in service — overheating damage is excluded from coverage, and no claim, return, or refund can be honored.
Independently Verified TrustScore
Article IV · Warranty Terms & Conditions
Five pillars of your coverage.
What you're entitled to under the warranty, broken into five operating principles.
Pillar 01 · Window
30-Day Installation Window
Install your engine within 30 days of the invoice date to keep your return and warranty valid. If the engine sits too long, air and moisture can cause rust and damage.
Pillar 02 · Coverage Term
1 to 36 Month Warranty Protection
If something goes wrong after the first 30 days return window, don't worry. Your part is still covered by our warranty for up to 1 to 36 months.
Pillar 03 · Freight
Full Shipping Costs Coverage
We pay for shipping if your return is approved under warranty.
Pillar 04 · Fitment
Compatibility Coverage
We use your VIN# to match the right engine. Even if it comes from a different year or model, it will fit and work like the original.
Pillar 05 · Recovery
Replacements & Refunds
If we approve your warranty claim, we will pick up the engine and send you a tested replacement of equal grade. A refund is issued if we cannot supply a compatible replacement within 10 business days — and if a delivered replacement is verified defective on installation, we source a second replacement or issue a full refund.
What Ships With Your Order
What's in the Crate?
Every used engine order ships as a Long Block plus Bolt-on Accessories — packaged and sent together.
1
Core Assembly
Long Block
- Blockhead
- Piston
- Crankshaft
- Camshaft
- Internal lubricated components
Alternator and Starter may not come with the engine. Wiring Harness can sometimes be cut during dismantling, in which case it should be swapped from your original engine. Water Pump will be attached but is recommended to be replaced with a brand new one (costs $30–$40) to eliminate most common overheating issues for the long run.
2
Included Free
Free Bolt-on Accessories
- Intake manifolds
- Exhaust manifolds
- Water pumps
- Sensors
- Thermostats
- Hoses
- Seals
- Timing belts
- Spark plugs
- Injectors
- Gasket
- Flywheel
- Oil Pan
- Distributors, etc.
Bolt-on accessories are provided as free courtesy items for installation convenience. They are not sold as part of the purchase price and are not covered by the warranty — wear or defects on courtesy accessories do not constitute a defective engine.
Article V · Scope of Coverage
What's covered, and what isn't.
A direct, side-by-side ledger of what falls inside the warranty boundary — and what stays outside it. No fine print.
✓
Inside the boundary
What's Covered?
Our warranty covers essential internal components only:
- Engine block
- Cylinder heads
- Pistons
- Crankshaft
- Camshaft
- Key internal moving parts
Coverage applies to verified internal defects or operational failure in these components within your warranty term, confirmed by a certified mechanic's diagnostic.
✕
Outside the boundary
What's Not Covered?
- External accessories (sensors, intake/exhaust manifolds, belts, Injectors, Hoses, Brackets, Oil pan etc.) are included for your convenience but not covered under warranty. Everything else, except what's covered, is not covered.
- Warranty coverage is parts only. Labor is excluded unless previously approved in writing or purchased separately.
- Any misuse or abuse — including activities such as racing or towing — as well as neglect, improper handling, or damage resulting from incorrect installation, unauthorized or unqualified repairs/modifications, are not covered.
- Existing problems with the vehicle that will cause damage to the ordered part will also void the warranty.
- The warranty excludes coverage for any delays, loss of time, transportation or towing expenses, or any related direct or indirect damages caused by a defect.
- Leaks caused by old gaskets, filters, or seals are not covered.
- Mileage discrepancies — mileage is provided to the best of our knowledge; the sale and warranty are based on the unit's tested condition, not exact mileage.
See What Buyers Actually Wrote
Required · Pre-Installation
Follow the steps to keep your warranty valid.
Installation must be performed by a licensed professional mechanic, following every step in our checklist — including fresh fluids, filters, seals, and a brand-new water pump. Keep your receipts.
Article VI · Voiding Conditions
What voids your warranty.
If any of the following occurs, warranty protection is forfeited. Read carefully — this is the part that costs people coverage.
V·01
Skipping the pre-installation checklist
V·02
Overheating or low lubrication damage
V·03
Doing any repairs or modifications not authorized by us
V·04
Melted, missing, or tampered heat tabs — conclusive evidence of overheating; automatic void
V·05
Holding defective items beyond 30 days
V·06
Not replacing the water pump during installation
V·07
Improper storage before installation — rust, corrosion, or exposure damage
V·08
Returning a part without a Return Authorization, in a condition different from how it was delivered, or with missing parts
Article VII · Filing a Claim
Ready to file a warranty claim?
Contact us by phone, text, or email with the following details ready:
01
Document A · Proof of Issue
A proof of the issue clearly showing the issue and stock# of our part.
02
Document B · Install Record
The installation invoice from your installer showing that our preinstallation checklist was followed.
03
Document C · Diagnostic
A diagnostic report from a certified mechanic isolating the exact issue.
04
Document D · Heat Tabs
A proof that heat tabs are not melted.
Every Claim Handled By a Real Person — Their Words
File a Warranty Return Claim
Reviewed by a real human · Reply within 1 hour, Mon–Sat · 8:30 AM – 10:30 PM ET (Mar–Nov) · 7:30 AM – 9:30 PM ET (Nov–Mar) · Claims decided within 2 business days of complete documentation · Approved returns receive a written Return Authorization (RMA) with pickup instructions
Article VIII · Purchase Agreement
What your purchase confirms.
Clear terms, agreed in writing at checkout — so there's never a dispute about what was promised.
§ Agreement
Checkout Acknowledgment
Your Order Is Your Agreement
By completing a purchase on AutoPowerSource.com, you acknowledge and agree to this warranty, the return terms above, and our full Warranty Terms & Conditions. Your checkout agreement, written pre-shipment photo approval, and signed delivery receipt form the record of the transaction.
Payment disputes for free courtesy accessories, buyer's remorse, or transit damage signed for on a clean BOL are outside the scope of this warranty; these matters are resolved under the return and claim procedures above, and disputed charges will be contested with the transaction records described here.
Your legal rights: This warranty gives you specific legal rights, and you may also have other rights that vary from state to state. See our Warranty Terms & Conditions for full details on limitations, transferability, and dispute resolution.
· · ·
Your engine, our promise.
A used engine isn't a phone case. It's a major decision — and the people behind your warranty know it. Every claim is read by a real specialist, not a queue.
Every engine protected· Every claim handled fairly· Every customer satisfied