Warranty & Quality Assurance

A 6-month unlimited-mileage promise on every component.

The HQ Motor Service Quality Standard

The aftermarket industry is built on trust. Before a product line is added to our catalog, it undergoes material analysis and tolerance testing to ensure it meets or exceeds OEM specifications. We don't sell "cheap" parts; we sell high-value replacements that last.

The 6-Month Unlimited-Mileage Warranty

We stand behind our products with a comprehensive 6-Month Unlimited Mileage Warranty covering defects in materials and workmanship. Whether your machine runs 10 hours a day or 24/7, if our part fails due to a manufacturing defect, we replace it.

Our Quality Control Protocol

Material Hardness Testing

ensuring camshafts and cranks withstand extreme stress.

Pressure Testing

checking cylinder heads and coolers for microscopic leaks.

Dimensional Accuracy

verifying gasket thickness and piston diameter to microns.

Surface Finish Inspection

ensuring smooth mating surfaces for a perfect seal.

Hassle-Free Claims Process

We have streamlined our process to be fair and fast: report the issue to our support team, verify the failure (we may ask for photos or a technical report), and resolve — we ship a replacement part immediately upon verification.

100% Satisfaction Guarantee

Our commitment extends beyond mechanical failure. If you're not satisfied with the fit or finish of a product upon arrival, our Returns & Exchange policy is designed to be straightforward.

Buy with confidence

Experience the peace of mind that comes with premium parts and superior backing.

Shop premium parts

HQMS Comprehensive Warranty Program

At HQMS, our commitment to exceptional customer service extends beyond offering competitive prices. We are proud to introduce our Comprehensive Warranty Program, designed with your peace of mind as a top priority. Here's what our program offers:

Extended Coverage: Enjoy a 6-month unlimited mileage warranty on all our products. This extended coverage ensures that your purchases are protected for a substantial period, giving you peace of mind.
Customer Satisfaction Guarantee: Your happiness is our success. We understand the importance of trust and satisfaction in building lasting customer relationships.
Reliable Support: In the unlikely event that you need to utilize your warranty, rest assured that you will receive the same level of superior customer service that you experienced during your purchase.