{"product_id":"two-engine-piston-kits-compatible-with-briggs-stratton-30-cubic-inch-s-z2-cyzx-cei4","title":"Two Engine Piston Kits Compatible with Briggs \u0026 Stratton 30 Cubic Inch Standard Vanguard Engines 68mm #843951","description":"\u003cp\u003eTwo Replacement 68mm Piston Kits With 3 Piece Rings Compatible With Briggs And Stratton Vanguard 16hp \u0026amp; 18hp Engines That Use This Part Number. V Twin Engines With 68mm Bore, Make Sure Your Briggs Vanguard Engine Uses These Pistons. Briggs Part Number 843951, If Unsure Message Me Your Model, Type \u0026amp; Code Numbers Note: These Piston \u0026amp; Ring Kit Compatible With These Briggs \u0026amp; Stratton Part Numbers: 843951 Pistons With Rings\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThese small engine pistons are Compatible with Briggs and Stratton 30 cubic inch Vanguard engines.\u003c\/li\u003e\n\u003cli\u003eMEASURE THE BORE BEFORE ORDERING - A caliper across the old piston crown settles which version of the engine you have, and it is the only test that does. Ordering by horsepower or by year is how the wrong part ends up on the bench, because the same machine was often built in more than one bore.\u003c\/li\u003e\n\u003cli\u003eCHECK RING END GAP IN THIS CYLINDER - Not in the old one. Square the ring in the bore, measure the gap with a feeler, and check side clearance in the piston groove while you are there. A ring that is tight at operating temperature will break a land.\u003c\/li\u003e\n\u003cli\u003eWORK OUT WHY THE OLD ONE FAILED - A scored bore had a cause. A hardened crankshaft seal or a split impulse line leans the mixture out and will take the new piston the same way it took the old one. Pressure and vacuum test the crankcase before the machine goes back together.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009653764250,"sku":"Z2-CYZX-CEI4","price":159.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/61ra0hyXVuL.jpg?v=1793383275","url":"https:\/\/performancesawsupply.com\/products\/two-engine-piston-kits-compatible-with-briggs-stratton-30-cubic-inch-s-z2-cyzx-cei4","provider":"Performance Saw Supply","version":"1.0","type":"link"}