Auto parts

The fit tool your build deserves.

Year. Make. Model. Trim. Engine. Transmission. A modern vehicle fit check built for Shopify merchants serving enthusiasts, aftermarket shops, and restomod builders — not a year-make-model plugin from a decade ago.

Build sheet VIN · JF1GV8J64CL021487
Year 2012
Make Subaru
Model Impreza WRX STI
Trim Limited sedan
Engine EJ257 · 2.5L turbo
Transmission 6-speed manual
Brembo BBK verified fitment Matches EJ257 · 5x114.3 · STI-spec hub
The YMM problem

Legacy fitment tools were built for a catalog you don't sell.

YMM was designed for OEM replacement parts shopped by year, make, and model — and nothing more. That works for a brake rotor in 2007. It does not work for the catalogs Shopify merchants actually sell today: aftermarket, performance, Euro, classic, and trim-sensitive.

Failures · line itemized 03 ITEMS
01

Trim-blind compatibility

A 2018 WRX and a 2018 STI show up as the same vehicle in a YMM dropdown. They have different brakes, different wheel hubs, different suspension geometry. A fit check that can't tell them apart will show a part as compatible when it isn't — and the return is on you.

WRX STI SAME YMM · DIFFERENT PARTS
02

Engine code blindness

An F-body shopper searching for an LS1 intake and one searching for an LS6 intake are shopping different parts. A YMM tool that only knows "2001 Camaro SS" can't distinguish — and the aftermarket catalog that sells both of those intakes loses the sale to the forum that can.

LS1 LS6 SAME CHASSIS · DIFFERENT ENGINE
03

Enterprise pricing on Shopify budgets

The YMM platforms that handle trim and engine-code granularity charge enterprise monthly fees, require licensed vehicle databases, and assume you have an integration team. That pricing model was designed around catalogs ten times the size of the average Shopify auto parts store.

LEGACY PRICING LICENSED DATA NOT BUILT FOR SHOPIFY
Workflow

From catalog upload to confirmed fitment.

Three operations. Run once per catalog, run continuously as you grow. ModelMatch sits inside your Shopify store and turns the compatibility data you already have into a fit check your shoppers can actually use.

OP · 01 Ready

Map parts to vehicles

Upload compatibility data by year, make, model, trim, engine code, or any combination. ModelMatch handles the granularity that YMM plugins leave on the table — including aftermarket, performance, and trim-sensitive fitment.

Output Compatibility database
OP · 02 Ready

Shoppers confirm fit

On every product page, shoppers select year, make, model, trim, and engine from dropdowns populated by your actual compatibility data. Green check. Yellow maybe. Red no. Clear answer before the add-to-cart, every time.

Output Verified purchase intent
OP · 03 Ready

Close the return loop

Wrong-part returns drop. Review scores improve. Shoppers who confirm fit once come back for the next part, the next build, the next season. The compound effect of confidence on a parts storefront is bigger than any single feature.

Output Repeat builds
Capabilities

Built for the builds that matter.

Three capabilities that turn a generic Shopify parts storefront into a vehicle fit check your shoppers actually trust — without enterprise tooling, licensed vehicle databases, or a three-month integration.

SKU · MM-FIT-01 Storefront surface
Ships with every plan

Vehicle fit check on every product page

Shoppers confirm fit against year, make, model, trim, and engine before adding to cart. Accurate, fast, mobile-first. Hides automatically on products without compatibility data — so your storefront never surfaces a half-broken widget to a shopper making a buying decision.

Response < 200ms
Granularity YMM + trim + engine
Mobile First-class
SKU · MM-FND-02 Standalone surface
Growth · Professional

Vehicle finder for full-build shoppers

A dedicated finder page where shoppers enter their vehicle and browse every compatible part in your catalog. Perfect for multi-part builds, full suspension jobs, and restorations where the shopper is buying six parts in one session, not one.

Use case Multi-line builds
Inputs Full YMM + engine
Cart Native Shopify
SKU · MM-DAT-03 Data surface
All plans · No licensing fees

Your data. Your compatibility. No licensed database required.

Upload the cross-references you already have. Import supplier catalogs. Map your own product-to-vehicle records. No third-party vehicle database to license, no per-query fees, no data lock-in. The compatibility you build is yours to keep and yours to export.

Import CSV · Shopify · AI
Ownership 100% yours
Export Anytime, anywhere
Auto parts merchant questions

Answers for catalogs modern YMM doesn't serve well.

How is ModelMatch different from legacy YMM fitment tools?
Three practical differences. First, it's priced for Shopify merchants — not enterprise catalogs. Second, the compatibility data model handles trim, engine code, and option-level granularity, not just year-make-model. Third, it's built to feel native to a modern Shopify theme, not embedded from a product designed for a different era of the web.
Does ModelMatch support year-make-model-engine (YMME) selection?
Yes. You can map parts to any combination of year, make, model, trim, engine code, and other attributes. Shoppers select from dropdowns populated by your actual compatibility data — not a generic vehicle database that might not match your catalog.
What about aftermarket, performance, or classic car parts where YMM isn't enough?
These are core use cases. Map parts to specific trims (WRX vs STI), engine codes (LS1 vs LS6), production ranges (early vs late 2018), or aftermarket configurations. ModelMatch handles the complexity that generic YMM leaves on the table.
Do I need to license a vehicle database from a third-party provider?
No. Your compatibility data is whatever you upload — supplier cross-references, manufacturer catalogs, your own research. You control the data, and you own it. No licensing fees, no external dependencies.
Can ModelMatch handle high-traffic auto parts storefronts?
Yes. Lookups run through a purpose-built API that scales with your storefront. Page speed is not affected — the fit check loads after main product content renders, so Core Web Vitals stay clean.
What does this cost?
ModelMatch starts at $19/month on the Starter plan, with Growth at $39/month and Professional at $79/month. Auto parts catalogs with deep SKU counts and many compatibility combinations typically fit Growth or Professional. Legacy enterprise fitment tools charge several times these prices.

Ready to sell replacement parts with confidence?

Install ModelMatch in minutes. Free for 14 days. No credit card required.