You're covered. Here's exactly how.
Every part is tested before it ships and backed for 90 days. If something's wrong, one call makes it right.
90-day warranty
On every A-grade, tested OEM part — counted from the day it's delivered.
Wrong or broken?
We repair or replace it, or refund you. We make it right.
One call starts it
Call (206) 686-6866 and a specialist walks you through it in minutes.
What the warranty covers
Straight answers — no fine-print surprises.
Covered
- ✓ A-grade, tested OEM parts for 90 days from delivery
- ✓ Engines: the long block (the core assembly)
- ✓ Transmissions: shifts properly, good gears and bearings
- ✓ A defective or damaged part — we repair, replace, or refund
Not covered
- – Shipping costs and labor / installation
- – Towing or any additional repair costs
- – Engine extras: manifolds, gaskets, seals, hoses, oil pan, timing belts, fuel injection
- – Damage from wrong install, modification, or user error
How long you have
Start any claim within your window — inspect your part as soon as it arrives.
You have 7 business days from delivery to start a return or report a problem, so check your part the moment it arrives and call us right away if anything's off.
How to make a claim
Three simple steps. We stay with you the whole way.
Call us for your RMA
Call (206) 686-6866 with your name, order number, and what's wrong. We issue your return (RMA) number.
Send a diagnostic report
We need a diagnostic report from an ASE-certified mechanic — it points to the exact root cause of the problem, so we get you the right fix.
We replace or refund
Return the part in its original condition with all components. We handle the replacement or refund from there.
Cancellations, in plain terms
- ✓ Need to cancel? Call us as soon as possible — before your order is confirmed there's no charge.
- • Cancel more than 24 hours after confirmation and a 30% restocking fee applies.
- • Lost or stolen after delivery is handled through the carrier — we'll help you file the claim.
Common questions
Is the part tested before it ships?
Yes. We only sell A-grade OEM parts, and each one is inspected and tested before it leaves us.
What if the part doesn't fit my vehicle?
It will fit. We verify fitment before your part ships — it only leaves us once it's confirmed for your exact vehicle. What we deliver is guaranteed to fit and work.
Do you cover labor or installation?
No — like most used-parts warranties, we cover the part itself, not labor, install, or towing. Call us and we'll explain exactly what's covered for your part.
How do I start a warranty claim?
One call: (206) 686-6866. We'll issue your RMA and walk you through it step by step.
Not sure about something? Just call.
A real specialist will confirm your coverage and start any claim in minutes.
☎ Call (206) 686-6866Best Use Auto Parts LLC · 7655 Sunset Hwy, Mercer Island, WA 98040 · Mon–Fri 6:00a–4:30p, Sat 8:00a–1:00p PT