Piston Rings 594437 Compatible with Briggs & Stratton 16HP 17HP 17.5HP 18HP OHV Engine – 90.5mm Bore Intek Single Cylinder

This piston ring set (594437) is compatible with Briggs & Stratton 16HP, 17HP, 17.5HP, and 18HP single cylinder OHV Intek engines. Designed for engines with a 90.5mm bore size to ensure proper compression and sealing. Fits many Briggs & Stratton 31-series models including: 319775, 31A507, 31A607, 31A677, 31A707, 31A777, 31A807, 31C707, 31C777, 31D577, 31E577, 31E607, 31E677, 31E707, 31E777, 31E877, 31G707, 31G777, 31L777, 31N607, 31N677, 31N707, 31N777, 31P607, 31P677, 31P707, 31P777, 31Q505, 31Q607, 31Q677, 31Q777, 31R507, 31R577, 31R607, 31R677, 31R707, 31R777, 31R807, 31R877, 31R975, 31R976, 31R977, 31S777, 31S977, 31U977 Short block models: 592054, 592059, 592060 Please verify your engine model, type, and code before ordering to ensure proper fitment.

• ✔ FITS BRIGGS & STRATTON ENGINES – Compatible with 16HP, 17HP, 17.5HP, and 18HP single cylinder OHV Intek engines. Fits many 31-series models (see description for full list). Verify model, type, and code before ordering.
• ✔ PISTON RING SET – Includes piston rings (594437) for engine rebuild and repair.
• ✔ 90.5MM BORE SIZE – Designed for engines with 90.5mm bore. Ensures proper compression and sealing when matched correctly.
• ✔ RESTORE ENGINE PERFORMANCE – Helps improve compression, reduce oil consumption, and restore engine power.
• ✔ LIL RED BARN QUALITY – Reliable aftermarket parts trusted by small engine repair professionals.