{"product_id":"atp-parts-so-22-automatic-transmission-extension-housing-seal","title":"ATP Parts SO-22 Automatic Transmission Extension Housing Seal","description":"\u003ch2\u003eAutomatic Transmission Extension Housing Seal for GM Applications\u003c\/h2\u003e\u003cp\u003eATP Parts SO-22 is an automatic transmission extension housing seal made as an exact-fit replacement for a range of GM rear-wheel-drive and light truck applications. With a 4.875 outside diameter, it is built for the housing-to-case sealing point where the rear bearing retainer meets the transmission case.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAutomatic transmission extension housing seal for housing-to-case sealing\u003c\/li\u003e\n\u003cli\u003e4.875 outside diameter for listed applications\u003c\/li\u003e\n\u003cli\u003eExact-fit replacement from ATP Transmission Seals and Gaskets\u003c\/li\u003e\n\u003cli\u003eUsed at the rear bearing retainer to case O-ring \/ square-cut seal location\u003c\/li\u003e\n\u003cli\u003eCross-references National 9613S and Pioneer Automotive Industries 760009 for the same application\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Information\u003c\/h2\u003e\u003cp\u003eATP Parts SO-22 is a transmission seal and gasket component for vehicles using the rear extension housing seal location. It is listed across 1990-1999 Chevrolet and GMC trucks, vans, SUVs, and performance cars, plus select Cadillac, Buick, Oldsmobile, Pontiac, Isuzu, and GMC\/GM platform applications. Common search terms for this part include automatic transmission extension housing seal for 1991 Chevrolet C1500, rear bearing retainer to case O-ring for 1995 GMC Yukon, and transmission housing seal for 1991-1999 Chevrolet S10 and GMC Sonoma.\u003c\/p\u003e\u003cp\u003eThis part number, SO-22, is also associated with interchange references including BBB Industries 13926 and Four Seasons 96135. The fitment list includes applications such as 1991-1999 Chevrolet Camaro, 1991-1999 Chevrolet Corvette, 1992-1999 GMC Yukon, and 1996-1999 Chevrolet Express 1500, making it a practical replacement for many GM automatic transmission service jobs.\u003c\/p\u003e\u003ch2\u003eCommon Problems This Seal Addresses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTransmission fluid seepage at the extension housing or rear bearing retainer\u003c\/li\u003e\n\u003cli\u003eLeakage at the case-to-housing sealing surface\u003c\/li\u003e\n\u003cli\u003eFluid loss after transmission service or rebuild\u003c\/li\u003e\n\u003cli\u003eSeal deterioration from age, heat, and transmission fluid exposure\u003c\/li\u003e\n\u003cli\u003ePersistent wetness around the rear of the transmission case\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the transmission family and seal location before installation, especially on applications with notes such as THM700-R4\/4L60\/MD8 or 4L60-E. Clean the sealing surfaces thoroughly, inspect the housing and case for scoring or distortion, and confirm the outside diameter matches the listed 4.875 specification. For best results, install the seal squarely to avoid pinching or uneven seating.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eATP Parts markets this seal as an exact-fit replacement part for transmission sealing service. The product is built to match the listed application requirements for the rear extension housing seal location.\u003c\/p\u003e","brand":"ATP Parts","offers":[{"title":"Default Title","offer_id":43385733611701,"sku":"BBFB-SO-22","price":12.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/AT_SO22_Fro_30844b07-7915-47b5-8d87-a798cf04e164.jpg?v=1774704586","url":"https:\/\/www.partcatalog.com\/products\/atp-parts-so-22-automatic-transmission-extension-housing-seal","provider":"PartCatalog","version":"1.0","type":"link"}