Industry

Automotive ecommerce, built around fitment and the parts catalog.

Selling parts online is its own discipline. A shopper has to land on the part that fits their exact vehicle, and a repair shop has to reorder on terms in seconds. We are a senior team that builds automotive ecommerce around year/make/model fitment, ACES and PIES data, VIN lookup, cross-reference, and core charges, serving the trade and retail on one store. Platform-agnostic, with sixteen years in ecommerce and no junior bench.

Trusted by 300+ brands
RolexIntelYETIPenn StatePurdue UniversityAsicsSiemensMarucci
Why parts brands come to us

When the wrong part ships, the store is the problem.

Automotive stores stall for reasons a generic build never anticipates: fitment that lets a shopper buy the wrong part, ACES and PIES data that drifts out of sync, a trade channel bolted on as an afterthought, and core charges and returns nobody modeled properly. We are the automotive ecommerce team brands call when the catalog is technical and the data has to be right. As a senior team that works across Shopify, Adobe Commerce, BigCommerce, and headless, we pair real engineering with parts-commerce strategy, so the work ships and the numbers follow. When the move is to a new platform entirely, our ecommerce replatforming team carries the fitment data and SEO across with it.

16+ yrs
Building ecommerce, since 2008
300+
Brands shipped worldwide
$10B+
In client GMV powered
94%
Client retention after launch
Partnerships · Reviews · Awards

Credentials & recognition.

Client-first approach

We're here to help you win, plain and simple.

Same senior team from kickoff to launch and beyond. We do not outsource, we do not disappear after go-live, and we do not hand you off.

Client TestimonialWatch their story
Client TestimonialWatch their story
94%
Client retention

Across every phase. Discovery, build, launch, and growth, the same senior team stays with you.

See more wins
What we build for automotive

From fitment search to wholesale accounts, the parts store built right.

Whatever the parts build needs, the same senior developers handle it end to end. Every engagement is scoped to your catalog and channel mix, not a fixed package.

/01Ecommerce developmentThe senior team behind every automotive build: custom themes, apps, and integrations across Shopify, Adobe Commerce, BigCommerce, and headless, with the platform chosen to fit your catalog./02B2B ecommerceTrade accounts for repair shops, jobbers, and dealers: net terms, tiered and contract pricing, fast reorder, and account hierarchies, running on the same store as your retail customers./03Adobe Commerce B2BNative B2B on Adobe Commerce for high-SKU parts catalogs: company accounts, quoting, requisition lists, and shared catalogs, for distributors and manufacturers selling at scale./04Magento integrationsTwo-way Magento connections to your ERP, DMS, PIM, and fitment data feeds, so inventory, pricing, and ACES and PIES records stay accurate without anyone rekeying parts data./05Ecommerce replatformingMigrations that protect fitment data, part numbers, SEO, and revenue, so moving a parts catalog to the right platform is a step up for the business and never a setback./06Headless commerce developmentComposable front ends on React and Next.js over a commerce API, for content-rich parts stores and fast vehicle search where a native theme cannot reach the performance you need./07Performance optimizationLarge parts catalogs are heavy. We trim bloat, tune fitment search and faceted filtering, and ship clean Core Web Vitals so deep category pages load fast enough to convert./08UX & ecommerce web designConversion-led design built around how parts buyers shop: vehicle selectors, fitment confirmation, and clear part data, so shoppers find the right SKU and buy with confidence./09Ecommerce consultancyPlatform selection, fitment data strategy, and channel architecture from a senior team, so the next build decision for your parts business rests on evidence rather than a sales pitch.
Fitment and parts catalog

Fitment and parts catalog: platform-native or custom?

The defining decision in an automotive build is how you run year/make/model fitment and the parts catalog. You can lean on the platform's native catalog plus a fitment app, or build a custom fitment layer around your own data model. Both are valid, and the right call depends on your catalog size, data quality, and how complex your fitment really is. We build to the same standard either way, and steer you toward the one your catalog genuinely needs.

Platform + fitment app

The native route keeps products in the platform's catalog and adds a fitment app or extension to handle year/make/model search, the vehicle selector, and the fitment-to-product mapping. The platform manages the catalog, checkout, and hosting, and your fitment data is loaded into the app and kept in sync from your supplier or PIM. It ships faster, costs less to run, and is the right call for the large majority of parts stores, where a proven fitment app covers the catalog cleanly once it is configured and the data is loaded well.

Best when
  • You want a faster, lower-overhead build
  • A proven fitment app fits your catalog and data
  • Your fitment logic is standard year/make/model
Custom fitment build

A custom build models fitment in your own data structure, with vehicle search, VIN decode, cross-reference, and interchange built into the store rather than bolted on through an app. The platform stays the engine for catalog, orders, and checkout, while the fitment layer is fully yours to shape. It costs more to build and maintain and asks more of your data, but it unlocks complex fitment rules, deep cross-reference, marketplace feeds, and performance a packaged app cannot reach on a very large catalog.

Best when
  • Your fitment rules are complex or non-standard
  • A very large catalog outgrows a packaged app
  • You feed marketplaces and need one data source

Not sure which way your catalog should go? Start with ecommerce development.

Why IWD

The same senior developers from kickoff to launch and beyond.

Most automotive projects go sideways for one of two reasons: the work gets passed to a junior team that has never touched fitment data, or the agency vanishes once the invoice clears. We built IWD to do the opposite.

  • We know the parts catalog

    Year/make/model fitment, ACES and PIES data, VIN lookup, cross-reference, and core charges are not edge cases to us. They are the build, and we have shipped them on real automotive stores.

  • B2B and DTC on one store

    Repair shops and dealers get net terms and trade pricing; retail customers get a clean storefront. One platform serves both, so you are not running two systems that drift apart.

  • Sixteen years in ecommerce

    We have shipped on every major commerce platform since 2008, including high-SKU technical catalogs where fitment accuracy and clean data decide whether the store works.

  • We build, then we stay

    Most clients keep us on after launch for fitment data upkeep, features, and growth. The team that built your parts store is the team that keeps it accurate and converting.

How we work

A clear path from audit to measurable results.

01

Audit

We review your catalog, fitment data, channels, and stack to map what is holding the parts business back and which platform fits a year/make/model catalog and your trade and retail mix.

02

Architect

A phased roadmap with scope, timeline, and a real number. You see the plan, the platform choice, the fitment data approach, and the priorities before any code is written.

03

Build

Two-week sprints, weekly demos, and a shared backlog. The same senior developers ship fitment search, B2B accounts, and integrations to platform standards every cycle.

04

Optimize

After launch we tune fitment search and performance, keep ACES and PIES data clean, run conversion experiments, and extend the roadmap. We stay to make the numbers move.

Questions, answered

What parts brands ask before they hire our automotive team.

The questions we hear most before an automotive build starts. If yours isn't here, just ask.

How do you build year, make, and model fitment search?

We build a vehicle selector backed by your fitment data so a shopper picks year, make, model, and submodel or engine and only sees parts that fit. We map each product to the vehicles it covers, support saved garages so a returning customer keeps their vehicle, and filter the catalog, search, and category pages by the selected vehicle so nobody buys the wrong part.

Can you work with ACES and PIES data?

Yes. We import and maintain ACES fitment and PIES product data from your supplier, PIM, or a data provider, and keep it in sync as catalogs change. We normalize attributes, images, and fitment records so the store, the marketplaces you feed, and your internal systems all read from the same source rather than drifting apart.

Do you support VIN lookup and part cross-reference?

Yes. We add VIN decode so a customer enters their VIN and the store resolves the exact vehicle, plus cross-reference and interchange so a competitor or OE part number returns the equivalent part you stock. Both cut returns and help shoppers land on the right SKU faster.

How do you handle core charges and parts returns?

We model core charges as a refundable deposit applied at checkout, tracked through the order, and credited when the customer returns the old core. We also build return and RMA flows that fit parts: restocking rules, fitment-related returns, and the documentation your warehouse and finance team need.

Can the same store serve repair shops, dealers, and retail customers?

Yes. We build one platform that runs B2B and DTC together: trade accounts get net terms, tiered and contract pricing, fast reorder, and account hierarchies for multi-location shops and dealers, while retail customers get a clean storefront. Each audience sees the pricing and catalog meant for them, on the same codebase.

Do you integrate with our ERP, DMS, or parts management system?

Yes. We build two-way integrations between the store and NetSuite, your ERP, dealer management system, or parts and warehouse software, so inventory, pricing, orders, and customer records stay accurate across every system without anyone rekeying data.

Build the automotive store your catalog deserves.

Tell us about your catalog, your fitment data, and the customers you sell to. We will come back within one business day with a real plan, the right platform, a real timeline, and a real number. No long sales cycle, and no guesswork.

Start a project