{"product_id":"valve-stem-seals-for-kohler-ch20-ch25-ch730-cv-series-4-pack-qr-z859-rtlf","title":"4 Valve Stem Seals Fits Kohler CH20 CH25 CH730 CV730","description":"\u003cp\u003eIntake valve stem seals that fit Kohler CH and CV engines, replacing part number 25-032-14-S. Four seals per order. These engines use a stem seal on the intake valve only, one per cylinder, so a twin cylinder engine uses two seals and this pack covers two engines or one engine with spares. The exhaust valves are designed to run without a stem seal. Fits CH18, CH20, CH22, CH23, CH25, CH620, CH640, CH670, CH680, CH730 and CH740 along with the CV and ECV equivalents including CV20, CV23, CV25, CV640, CV730 and CV740. Cross-references to 12-032-02, 24-032-05-S and 66-032-05. Hardened valve seals produce blue smoke on startup and after extended idling. Inspect the valve guides at the same time, since a worn guide allows the valve to rock and will quickly ruin a new seal.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFITS KOHLER CH18, CH20, CH22, CH23, CH25, CH620, CH640, CH670, CH680, CH730 AND CH740, plus the CV and ECV equivalents such as CV20, CV23, CV25, CV640, CV730 and CV740. Replaces 25-032-14-S. Hardened valve seals are the reason one of these engines puffs blue smoke on startup and after a long idle, then clears up once it is working.\u003c\/li\u003e\n\u003cli\u003eFOUR SEALS. These engines use a stem seal on the intake valve only, one per cylinder, so a twin cylinder engine uses two. Four seals covers two engines, or one engine with a spare pair on the shelf. The exhaust valves run without a stem seal by design on these engines.\u003c\/li\u003e\n\u003cli\u003eREPLACES 25-032-14-S and cross-references to 12-032-02, 24-032-05-S and 66-032-05. If your parts diagram or dealer quote shows any of those numbers, this is the seal.\u003c\/li\u003e\n\u003cli\u003eSEALS ARE A SYMPTOM. A seal does not harden on its own schedule while everything else stays new. Check the valve guides at the same time, because a worn guide lets the valve rock in the bore and will destroy a fresh seal within a season. If the guide is worn, the guide is the repair and the seal is part of it.\u003c\/li\u003e\n\u003cli\u003eWHILE THE HEADS ARE OFF. Replace the head gaskets, check the valve seats for recession, roll the pushrods on a flat surface to check them, and set valve lash to your engine manual on reassembly. Getting the heads off is most of the labor on this job, so do everything that is in there while you are there.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009593045146,"sku":"QR-Z859-RTLF","price":24.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/412_OaPj7nL.jpg?v=1793382125","url":"https:\/\/performancesawsupply.com\/products\/valve-stem-seals-for-kohler-ch20-ch25-ch730-cv-series-4-pack-qr-z859-rtlf","provider":"Performance Saw Supply","version":"1.0","type":"link"}