ConverMax is the default pick for large catalogs, Spark Fitment is the default pick for a small Shopify store that wants a free start, and EasySearch is the best value subscription option at $19 per month. Fitment software is only as good as the data behind it, so check if the tool reads ACES and PIES files, a CSV file, a Google Sheet, or a built-in vehicle database before you commit. SPT is the clearest hidden dependency here: its listing states that a ShowMeTheParts API License is required for all functionality, so the $300 monthly fee is not the full cost.
Fitment software matches a part to the vehicles it fits, usually by year, make, model, submodel, engine, or VIN. A shopper picks a vehicle once, then sees only compatible parts, which cuts wrong orders and returns. Each tool below was checked against its Shopify App Store listing on 12 November 2026. Pick by catalog size first, then by how your fitment data arrives.
On this page
Best fitment software auto parts: comparison table
Swipe the table sideways on a phone to see every column.
| # | Name | Best for | Starting price | Free plan / trial | Link |
|---|---|---|---|---|---|
| 1 | ConverMax | Large catalogs and advanced fitment search | $250 per month | Free trial (30 days) | Visit |
| 2 | Spark Fitment | Small Shopify stores starting free | $0 per month | Yes | Visit |
| 3 | EasySearch | Low cost year, make and model search | $19 per month | Free trial (14 days) | Visit |
| 4 | FitmentPro | VIN and registration code lookup | $0 per month | Yes | Visit |
| 5 | PartFinder | Submodel level collection filtering | $49 per month | Free trial (14 days) | Visit |
| 6 | VFitz | Lowest entry price with trim level mapping | $0.97 per month | Free trial (30 days) | Visit |
| 7 | FitmentFlow | Google Sheets fitment data | $29 per month | Free trial (14 days) | Visit |
| 8 | SPT: Auto Parts Fitment | ACES and PIES catalog sync | $0 per month | Yes | Visit |
The 8 best best fitment software auto parts, in detail
ConverMax
Best for: Large catalogs and advanced fitment search
ConverMax is built for large and complex catalogs. Its listing says the search app handles catalogs with millions of SKUs while showing shoppers only parts that fit. It does not sell a fitment database or own your data.
- Instead, it connects to data from ACES and PIES files, spreadsheets, or 16 fitment sources you may already have accounts with.
- The plan range runs from $250 per month to $850 per month, with a 30-day free trial.
- Features include advanced year, make and model search, a wheels and tires search version, My Garage, unlimited filters, products and vehicle applicati
- Choose ConverMax when your catalog is large or your fitment data comes from several sources.
Pros
- Connects to 16 fitment sources and reads ACES and PIES files
- unlimited filters, products and vehicle applications
Cons
- Entry price of $250 per month is high for a small store
- VIN search is listed on the $850 per month tier
Spark Fitment
Best for: Small Shopify stores starting free
Spark Fitment adds a year, make and model vehicle selector to a Shopify storefront. Shoppers pick their vehicle once and the catalog filters to only compatible parts, while universal fit items always appear. The selector remembers each shopper garage across visits, and the app works with any Online Store 2.0 theme from the theme editor.
- Fitment data can be added in the admin, mapped visually, or imported from a CSV file.
- The Free plan covers up to 5,000 vehicle entries.
- The next plan is $50 per month for up to 20,000 vehicle entries, and a $100 per month plan is also listed.
- Features include a cascading year, make, model, submodel and engine selector, live filtering, bulk CSV import, visual product mapping, a shopper garag
Pros
- Free plan covers up to 5,000 vehicle entries
- CSV import and visual product mapping with a saved shopper garage
Cons
- The $50 per month plan caps entries at 20,000 vehicle entries
- the listing had no merchant reviews at the time of checking
EasySearch
Best for: Low cost year, make and model search
EasySearch adds a filter search widget, a fitment widget to the product page, and fitment tables that help shoppers find a product that fits. The app has a preloaded year, make and model database for automotive parts, and you can also add your own dropdowns. That preloaded database lets a new store start without first building a vehicle list from scratch.
- The Basic plan is $19 per month and includes the search form, the fitment widget for the product page, unlimited fields, rows, users and products, imp
- The Premium plan is $75 per month.
- Both plans come with a 14-day free trial, billed in USD every 30 days.
- Choose EasySearch for a low monthly cost and a preloaded vehicle database.
Pros
- Preloaded year, make and model database for auto parts
- Basic plan includes unlimited fields, rows, users and products
Cons
- No free plan, only a 14-day free trial
- Premium plan at $75 per month is nearly four times the Basic price
FitmentPro
Best for: VIN and registration code lookup
FitmentPro lets shoppers filter by year, make and model, by VIN, or by German HSN and TSN codes from registration documents. Its built-in vehicle database covers the EU, UK, US and Australian markets and more than 600,000 vehicles. Shoppers select a car, motorcycle or ATV through a step-by-step filter and see only parts that fit, and the app warns them at cart and checkout when a part does not fit.
- My Garage lets shoppers save vehicles and shop matching parts later.
- The Free plan covers up to 10 products.
- Growth is $9.99 per month, or $99.99 per year, for up to 100 products, up to 500 vehicles per product, and one automation rule.
- A $29.99 per month plan is also listed, and Enterprise is $79.99 per month with HSN, TSN and VIN lookup.
Pros
- Built-in database covers more than 600,000 vehicles
- warns shoppers at cart and checkout when a part does not fit
Cons
- HSN, TSN and VIN lookup is only on the $79.99 per month Enterprise plan
- Growth plan caps fitment at 100 products and 500 vehicles per product
PartFinder
Best for: Submodel level collection filtering
PartFinder, formerly known as Automotive Part Search and developed by GoVedia, adds make, model, year and optional submodel search. Collection filtering works at submodel level, which helps when two trims of the same model take different parts. Persistent vehicle filtering keeps a shopper vehicle selection active across sessions.
- Bulk data import works through CSV and Excel files, and shoppers can save vehicles in My Garage.
- The price is a single Standard plan at $49 per month, with a 14-day free trial, billed in USD every 30 days.
- There is no cheaper tier and no free plan.
- A store with 20 products pays the same amount as a store with 2,000 products.
Pros
- Make, model, year and submodel collection filtering
- persistent vehicle filtering and My Garage
Cons
- Single $49 per month plan with no cheaper tier for small catalogs
- no free plan, only a 14-day free trial
VFitz
Best for: Lowest entry price with trim level mapping
VFitz, developed by acuinsight inc and launched on 20 January 2021, adds a dropdown menu for year, make and model using a vehicle database. Shoppers pick a vehicle and see products mapped to it, down to trim level. Features include the dropdown menu, product mapping, cart verify, verify order notes, a vehicles database, and custom visual styles.
- The Trial plan is $0.97 per month with a 30-day free trial and a limit of 50 vehicle products.
- Starter is $7.67 per month with a 7-day free trial and a limit of 1,000 vehicle products.
- Bronze is $17.87 per month with a limit of 10,000 vehicle products, and Platinum is $57.97 per month with unlimited mappings.
- The counting rule matters: a part listed for a 2010 to 2014 Subaru Outback counts as 5 vehicles, so wide year ranges use the limit faster than the pro
Pros
- Lowest entry price in this guide at $0.97 per month
- maps products by year, make, model and trim level
Cons
- Trial plan caps vehicle products at 50
- each model year counts as a separate vehicle, so a 2010 to 2014 range counts as 5 vehicles
FitmentFlow
Best for: Google Sheets fitment data
FitmentFlow is a parts finder driven by a Google Sheets spreadsheet. It reads compatibility data directly from the sheet, so shoppers use dropdown filters to find matching products and updates appear on the store without a fresh import. No product tagging or metafields are needed, which suits a seller who already keeps fitment in a sheet.
- A single sheet supports multiple stores, with extra stores charged per store per month.
- Small Business is $29 per month for 1,500 monthly lookups, 2,500 rows, all filter levels, email support, and extra stores at $19 per store per month.
- Growth is $79 per month for up to 5,000 lookups, up to 10,000 rows, priority support, and extra stores at $15 per store per month.
- Scale is $199 per month for up to 30,000 lookups, up to 20,000 rows, and live support.
Pros
- Reads fitment data directly from Google Sheets with no product tagging or metafields
- one sheet supports multiple stores
Cons
- Small Business plan caps lookups at 1,500 per month and fitment data at 2,500 rows
- no free plan, only a 14-day free trial
SPT: Auto Parts Fitment
Best for: ACES and PIES catalog sync
SPT, short for Standard Parts Toolkit, equips a store to sell auto parts with year, make and model search, a saved garage, and VIN or license plate lookup. Catalogs sync to store products and metafields, product pages show fitment status, specs and a buyer guide, and the selected vehicle follows the order to fulfillment. Price and inventory sync from your feed, and orders export to email, FTP, or API.
- The Free plan allows 100 lifetime fitment lookups.
- The subscription plan is $300 per month, with a free trial available.
- The listing states that a ShowMeTheParts API License is required for all functionality, so a buyer must confirm that license cost before counting the
- SPT launched on 13 October 2022.
Pros
- Works from ACES and PIES, ShowMeTheParts or CSV
- catalog sync, VIN or license plate lookup, and a saved garage
Cons
- A ShowMeTheParts API License is required for all functionality
- Free plan allows only 100 lifetime fitment lookups
How we chose
We chose tools that add a real vehicle fitment search to an auto parts store, with a named vehicle database, a file import, or a catalog feed behind the search. Each tool had to have a live Shopify App Store listing with a published price or a published free plan on 12 November 2026. Prices and plan limits in this guide come from those listings opened on 12 November 2026. We did not test any tool hands-on. We did not install, configure, or run any of the apps, and we did not use customer counts, awards, or review scores to rank them. SPT requires a ShowMeTheParts API License for all functionality, which means its $300 monthly amount is not the full cost for a store that does not already hold that license.
Pick by budget and catalog size
| Situation | Pick | Monthly cost to start |
|---|---|---|
| Free start, under 5,000 vehicle entries | Spark Fitment | $0 per month |
| Free start, under 10 products | FitmentPro | $0 per month |
| Under $20 per month, preloaded vehicle database | EasySearch | $19 per month |
| Under $30 per month, Google Sheets data | FitmentFlow | $29 per month |
| Submodel filtering on one fixed plan | PartFinder | $49 per month |
| Large catalog, ACES and PIES, several sources | ConverMax | $250 per month |
| Catalog sync with ShowMeTheParts feed | SPT: Auto Parts Fitment | $0 per month, then $300 per month |
Frequently asked questions
What is fitment software for auto parts?
Fitment software matches a part to the vehicles it fits, usually by year, make, model, submodel, engine, or VIN. A shopper picks a vehicle once, then sees only compatible parts, which cuts wrong orders and returns. Most tools in this guide are Shopify apps that add a vehicle selector, a fitment table, or a saved garage.
How much does fitment software for auto parts cost?
Prices in this guide run from $0 per month to $300 per month. Spark Fitment and FitmentPro start at $0 per month on a free plan, EasySearch at $19 per month, FitmentFlow at $29 per month, PartFinder at $49 per month, and ConverMax at $250 per month. SPT starts at $0 per month, then $300 per month, plus a ShowMeTheParts API License.
Which fitment software is best for a small Shopify auto parts store?
Spark Fitment is the best free start for a small store, because its Free plan covers up to 5,000 vehicle entries with CSV import and a saved garage. EasySearch is the best low cost subscription option at $19 per month, with a preloaded vehicle database and unlimited fields, rows, users and products on Basic.
Which fitment software is best for a large auto parts catalog?
ConverMax is the best pick for a large catalog, because it connects to 16 fitment sources, reads ACES and PIES files, and lists unlimited filters, products and vehicle applications. SPT is the best pick when the catalog also needs sync to Shopify products and metafields, plus VIN or license plate lookup.
Do I need ACES and PIES data to use fitment software?
No, you do not need ACES and PIES data for every tool. EasySearch and VFitz use a preloaded or built-in vehicle database, FitmentFlow reads a Google Sheet, and FitmentPro uses its own database of more than 600,000 vehicles. ACES and PIES matter most when suppliers send fitment files in that format.
What is the difference between a free plan and a free trial?
A free plan stays free within its published limit, such as 5,000 vehicle entries on Spark Fitment or 100 lifetime fitment lookups on SPT. A free trial gives access for a set number of days, such as 14 days on EasySearch, PartFinder and FitmentFlow, or 30 days on ConverMax and VFitz, then moves to the subscription amount.
Sources
- https://apps.shopify.com/year-make-model-fitment-search
- https://apps.shopify.com/spark-fitment
- https://apps.shopify.com/easysearch
- https://apps.shopify.com/fitmentpro-automotive-carparts
- https://apps.shopify.com/automotive-part-search
- https://apps.shopify.com/vfitz
- https://apps.shopify.com/fitment-flow
- https://apps.shopify.com/standard-parts-toolkit
Prices and features were read on each company’s own website in November 2026. They change often, so confirm the current offer on the official site before you sign up or buy.