Find what fits.
Engines. Parts. Equipment.

Engine Swap Compatibility

Enter your discontinued engine and get ranked replacements with compatibility scores. See shaft diameter, length, keyway, RPM, and mounting match — plus adapter kits that enable the swap. Buy direct from Amazon.

Parts Cross-Reference

12,000+ OEM parts from Briggs, Kohler, Honda, Kawasaki, Tecumseh, and Predator. Cross-referenced to Oregon, Stens, Wix, NGK, Champion, Denso, and Autolite aftermarket equivalents.

Equipment Parts Lookup

1,280 equipment models from John Deere, Toro, Husqvarna, Scag, Ariens, Craftsman, and more. See every maintenance part — filters, plugs, belts, blades — with OEM numbers and one-click Amazon purchase.

Adapter Kits & Swap Guides

50+ adapter kits cataloged — shaft sleeves, mounting plates, wiring harnesses, throttle cables. Know exactly what hardware enables your engine swap before you buy.

Tecumseh Replacement Matrix

Tecumseh is defunct. We mapped every common model (HMSK80, H50, TVS120, OHV120...) to current Honda, Predator, and Briggs replacements with exact shaft specs and adapter requirements.

Community Submissions

Report a successful swap, a part cross-reference, or a data correction. Help grow the database and get verified by our team. Real-world swap data from technicians and DIYers.

Simple, honest pricing

Start free. Upgrade when you need full cross-references.