{"product_id":"gsc-p-d-nissan-tb48de-valve-stem-viton-7mm-seal-set-of-24","title":"GSC P-D Nissan TB48DE Valve Stem Viton 7mm Seal - SET OF 24","description":"\u003cp\u003eThe GSC P-D Nissan TB48DE Valve Stem Viton 7mm Seal SET OF 24 (part number 1054) delivers factory-beating sealing performance for the demanding 4.8L TB48DE inline-six engine found in the Nissan Patrol and Safari. Engineered from high-grade Viton fluoroelastomer, GSC1054 maintains a tight seal under extreme heat cycles, high-RPM driving, and the aggressive oil environments found in modified or high-mileage TB48 engines. Each set covers the complete engine with all 12 intake and 12 exhaust valve stem seals required for a full cylinder-head refresh.\u003c\/p\u003e\n\n\u003ch4\u003eFeatures and Benefits\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eViton fluoroelastomer construction resists heat, fuel, and oil degradation far beyond OEM rubber seals\u003c\/li\u003e\n\u003cli\u003ePrecision 7mm stem diameter fits all TB48DE intake and exhaust valve guides without modification\u003c\/li\u003e\n\u003cli\u003eSET OF 24 provides complete engine coverage for all 12 cylinders (12 intake + 12 exhaust)\u003c\/li\u003e\n\u003cli\u003eEliminates blue-smoke-on-startup caused by worn or cracked factory valve seals\u003c\/li\u003e\n\u003cli\u003eCompatible with stock and performance camshafts, including GSC S2 and S3 grinds\u003c\/li\u003e\n\u003cli\u003eManufactured to OEM+ tolerances for consistent lip-seal contact and oil metering\u003c\/li\u003e\n\u003cli\u003eReduces oil consumption and keeps combustion chambers cleaner on high-mileage TB48 engines\u003c\/li\u003e\n\u003cli\u003eGSC Power Division quality control ensures each seal meets dimensional specifications before packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eFitment\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eTrim\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1997\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1999\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2000\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2001\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2002\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2003\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2006\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2007\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2008\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2009\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2010\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2011\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2012\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2013\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2016\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2018\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2020\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2022\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003ePatrol GR Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1997\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSafari Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSafari Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1999\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSafari Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2000\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSafari Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2001\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSafari Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2002\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSafari Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2003\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSafari Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSafari Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSafari Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2006\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSafari Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2007\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSafari Y61\u003c\/td\u003e\n\u003ctd\u003e4.8L TB48DE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1054\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGSC Power Division\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eViton Fluoroelastomer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Stem Diameter\u003c\/td\u003e\n\u003ctd\u003e7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e24 pieces per set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eIntake and Exhaust (12 intake, 12 exhaust)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine\u003c\/td\u003e\n\u003ctd\u003eNissan TB48DE 4.8L Inline-6 DOHC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eGSC Power Division limited warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e24 x Viton valve stem seals (12 intake, 12 exhaust)\u003c\/li\u003e\n\u003cli\u003eSized for Nissan TB48DE 7mm valve stems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eWhat vehicles does GSC1054 fit?\u003c\/strong\u003e\u003cbr\u003e\nThe GSC P-D 1054 valve stem seal set fits Nissan Patrol GR Y61 and Nissan Safari models equipped with the TB48DE 4.8L inline-six DOHC engine, spanning 1997 through 2022 production years.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy choose Viton over OEM rubber valve stem seals?\u003c\/strong\u003e\u003cbr\u003e\nViton fluoroelastomer withstands sustained temperatures above 200 degrees Celsius and resists degradation from synthetic motor oils, high-octane fuels, and ethanol blends. OEM rubber seals harden and crack over time, especially in engines running elevated oil temps. The GSC1054 set maintains consistent sealing for far longer than factory replacements.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes GSC1054 work with aftermarket camshafts?\u003c\/strong\u003e\u003cbr\u003e\nYes. The 1054 seals are compatible with stock TB48DE camshafts as well as GSC S2 and S3 performance grinds. They are dimensionally identical to OEM and seat securely on stock valve guides without modification.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow many valve stem seals does a TB48DE engine require?\u003c\/strong\u003e\u003cbr\u003e\nThe Nissan TB48DE is a 6-cylinder DOHC engine with 4 valves per cylinder, totaling 24 valves (12 intake, 12 exhaust). The GSC1054 set provides all 24 seals needed for a complete valve-seal replacement job.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat are the symptoms of worn TB48DE valve stem seals?\u003c\/strong\u003e\u003cbr\u003e\nCommon symptoms include blue smoke from the exhaust on cold starts (as oil drains past the seals overnight), increased oil consumption without visible leaks, and fouled spark plugs. Replacing with GSC1054 typically eliminates these issues.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these be installed without removing the cylinder head?\u003c\/strong\u003e\u003cbr\u003e\nYes, with a spark plug hole air fitting and a valve spring compressor tool, TB48DE valve stem seals can be replaced in-vehicle. However, a full head-off procedure allows for thorough inspection and cleanup. Consult a qualified mechanic if you are unsure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this the complete set for both intake and exhaust valves?\u003c\/strong\u003e\u003cbr\u003e\nYes. Each GSC1054 package contains 24 pieces covering all 12 intake and 12 exhaust valve positions on the TB48DE engine. No supplemental seals are needed for a full replacement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 1054 and OEM Nissan valve stem seals?\u003c\/strong\u003e\u003cbr\u003e\nThe GSC Power Division 1054 seals use Viton compound rather than the standard rubber or nitrile used in OEM parts. This upgrade provides superior heat resistance, improved oil retention, and longer service life, particularly valuable in engines subjected to hard use or extended high-load operation.\u003c\/p\u003e\n\n\u003ch4\u003eInstallation Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the battery and allow the engine to cool completely before beginning work.\u003c\/li\u003e\n\u003cli\u003eRemove the valve cover(s) and camshaft journals to access the valve spring retainers.\u003c\/li\u003e\n\u003cli\u003ePressurize the cylinder through the spark plug hole using a compression fitting and shop air (at least 100 PSI) to hold the valves in place.\u003c\/li\u003e\n\u003cli\u003eUse a valve spring compressor to compress each spring and remove the keepers with a magnetic tool.\u003c\/li\u003e\n\u003cli\u003eLift off the retainer, spring, and spring seat, then pull the old valve stem seal from the guide using seal removal pliers.\u003c\/li\u003e\n\u003cli\u003eLubricate the new GSC1054 Viton seal with clean engine oil and install squarely onto the valve guide using a seal installation tool of the correct diameter.\u003c\/li\u003e\n\u003cli\u003eReassemble the spring seat, spring, retainer, and keepers, verifying keeper seating before releasing spring pressure.\u003c\/li\u003e\n\u003cli\u003eRepeat for all 24 valves, then reinstall camshafts, valve cover, and all remaining components.\u003c\/li\u003e\n\u003cli\u003eStart the engine and verify no oil smoke or unusual valve train noise before returning to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eProposition 65 Warning:\u003c\/strong\u003e This product can expose you to chemicals including carbon black, which is known to the State of California to cause cancer. For more information, go to \u003ca href=\"https:\/\/www.p65warnings.ca.gov\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e.\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":40485047173199,"sku":"GSC1054","price":31.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/gsc-p-d-nissan-tb48de-valve-stem-viton-7mm-seal-set-of-24-valve-seals-gsc-power-division-2.jpg?v=1717521999","url":"https:\/\/www.blackopsautoworks.com\/products\/gsc-p-d-nissan-tb48de-valve-stem-viton-7mm-seal-set-of-24","provider":"Black Ops Auto Works","version":"1.0","type":"link"}