{"title":"Transmission Gaskets \u0026 Seals","description":"\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eSigns of a Failing Transmission Seal\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eA leaking transmission gasket or seal usually gives itself away in one of these ways:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eRed or brown fluid spots under the centre of the car, near the transmission pan.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eA low fluid level on the dipstick with no other obvious cause.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eSlipping or delayed gear engagement as fluid pressure drops.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eA burning smell if fluid drips onto the exhaust or hot transmission housing.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFluid residue built up around the pan bolts or output shaft seal.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eTransmission fluid does more than lubricate; it also runs the hydraulics that shift the gears. A slow leak here doesn't just make a mess; it can start affecting how the gearbox shifts.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eTransmission Gasket or Gearbox Gasket? Same Part, Different Habit\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSome workshops say transmission, some say gearbox, and the part doesn't care which one you use. Both terms point to the same seals: the pan gasket, valve body gasket, and the various shaft seals that keep fluid contained inside the housing. We list under both terms so the right part turns up either way.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eBuilt for Specific Gearbox Platforms\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCertain automatic transmissions come up constantly in gasket and seal searches, usually because they've been in production for decades across multiple GM platforms:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\n\u003cspan\u003eTurbo 350 transmission gasket kits:\u003c\/span\u003e\u003cspan\u003e a long-running, widely used automatic still common in older American vehicles.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\n\u003cspan\u003eTurbo 400 transmission gasket kits:\u003c\/span\u003e\u003cspan\u003e a heavier-duty cousin of the 350, popular in performance and towing builds.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\n\u003cspan\u003e4L60E transmission gasket and seal kits:\u003c\/span\u003e\u003cspan\u003e the modern successor, found across a huge range of GM vehicles.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\n\u003cspan\u003e700R4 transmission gasket and filter kits:\u003c\/span\u003e\u003cspan\u003e an overdrive-equipped unit popular in restomod and daily-driver builds alike.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eIf your gearbox isn't one of these well-known platforms, that's fine too. Every listing carries confirmed fitment by make, model, and transmission code.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eWhat's Included in a Transmission Gasket Kit\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eA full kit typically bundles the seals needed for a proper service or rebuild, rather than leaving you to source them one at a time:\u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\n\u003cspan\u003ePan gasket:\u003c\/span\u003e\u003cspan\u003e seals the transmission pan to the housing, the most commonly replaced seal during a fluid service.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\n\u003cspan\u003eValve body gasket:\u003c\/span\u003e\u003cspan\u003e seals internal hydraulic passages that control shifting.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\n\u003cspan\u003eOutput shaft seal:\u003c\/span\u003e\u003cspan\u003e prevents fluid loss where the driveshaft connects to the transmission.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\n\u003cspan\u003eExtension housing gasket:\u003c\/span\u003e\u003cspan\u003e seals the rear section of the transmission case on many rear-wheel-drive layouts.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003eBuying the full gearbox seal kit at once means a fluid service or gearbox refresh only needs one order, not several trips back for parts you missed.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eReplacing a Transmission Pan Gasket\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis is one of the more accessible transmission jobs, especially compared to anything involving the internals:\u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eDrain the transmission fluid fully before removing the pan bolts.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eLower the pan carefully, since some residual fluid and debris will still be inside.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eClean both mating surfaces and check the pan for any built-up metal shavings.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFit the new gasket, torque the bolts evenly, and refill with the correct fluid type.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eDeeper seals, like the output shaft or valve body gasket, usually mean pulling the transmission or at least dropping it partially, so budget more time and possibly a second set of hands for those jobs.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eWhy Choose CBT Auto Parts for Transmission Gaskets and Seals\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFitment matched to your specific gearbox platform, including well-known builds like the 4L60E and 700R4.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFull kits available, covering pan, valve body, and shaft seals in one order.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eMaterials rated to handle constant fluid exposure and heat cycling.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFast, tracked shipping across Australia, with most orders out within a day.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eStandard parts warranty covering manufacturing defects.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis collection is part of our wider Gaskets \u0026amp; Seals range, built to keep your gearbox sealed properly whether you're doing a routine fluid service or a full rebuild.\u003c\/span\u003e\u003c\/p\u003e","products":[],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/0406\/2450\/collections\/Transmission_Gaskets_Seals.jpg?v=1786471179","url":"https:\/\/cbtautoparts.com\/collections\/transmission-gaskets-seals.oembed","provider":"CBT Auto Parts","version":"1.0","type":"link"}