{"title":"GSC Power Division","description":"\u003cp\u003eUnleash the maximum performance of your import engine with GSC Power Division components, proudly offered by Straight Six Imports. GSC specializes in the design and manufacture of world-class, high-quality valvetrain components engineered for extreme horsepower and high-RPM applications.\u003c\/p\u003e\n\u003cp\u003eBrowse our selection of GSC Power Division products, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"citation-258\"\u003e\u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-258\"\u003ePerformance Camshafts:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-258\"\u003e From the street-focused \u003c\/span\u003e\u003cspan class=\"citation-258\"\u003eS1 Cams\u003c\/span\u003e\u003cspan class=\"citation-258\"\u003e (great for stock turbo or mild upgrades) to the full-race \u003c\/span\u003e\u003cspan class=\"citation-258\"\u003eS2 and S3 Billet Camshafts\u003c\/span\u003e\u003cspan class=\"citation-258 citation-end-258\"\u003e, GSC delivers superior mid-range and top-end power without sacrificing low-end torque.\u003csup class=\"superscript\" data-turn-source-index=\"1\"\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003cspan class=\"citation-257 citation-end-257\"\u003eWe offer cams for Subaru EJ\/FA series, Mitsubishi Evo 4G63\/4B11T, Toyota 2JZ\/3SGTE, and more!\u003csup class=\"superscript\" data-turn-source-index=\"2\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePerformance Valvetrain Kits:\u003c\/b\u003e Control high lift and high RPM with confidence. \u003cspan class=\"citation-256\"\u003eShop \u003c\/span\u003e\u003cspan class=\"citation-256\"\u003eGSC Beehive and Conical Valve Springs\u003c\/span\u003e\u003cspan class=\"citation-256\"\u003e with \u003c\/span\u003e\u003cspan class=\"citation-256\"\u003eTitanium Retainers\u003c\/span\u003e\u003cspan class=\"citation-256 citation-end-256\"\u003e, designed for maximum stability and reduced mass.\u003csup class=\"superscript\" data-turn-source-index=\"3\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"citation-255\"\u003e\u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-255\"\u003eSupporting Components:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-255\"\u003e Find essential parts like \u003c\/span\u003e\u003cspan class=\"citation-255\"\u003eViton Valve Stem Seals\u003c\/span\u003e\u003cspan class=\"citation-255\"\u003e, Manganese Bronze \u003c\/span\u003e\u003cspan class=\"citation-255\"\u003eValve Guides\u003c\/span\u003e\u003cspan class=\"citation-255\"\u003e, and \u003c\/span\u003e\u003cspan class=\"citation-255\"\u003eZero-Tick Lifters\u003c\/span\u003e\u003cspan class=\"citation-255 citation-end-255\"\u003e to complete your head build.\u003csup class=\"superscript\" data-turn-source-index=\"4\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether you're building a drag-strip monster or a street-driven track car, trust Straight Six Imports to supply the precision-engineered GSC parts you need for reliable, record-breaking power. Shop the best in Japanese sport compact engine internals today!\u003c\/p\u003e","products":[{"product_id":"gsc-p-d-4g63t-evo-1-9-90-98-dsm-viton-6-6mm-valve-stem-seal-set","title":"GSC P-D 4G63T Evo 1-9 \/ 90-98 DSM Viton 6.6mm Valve Stem Seal Set","description":"\u003cp\u003eGSC P-D 4G63T Evo 1-9 \/ 90-98 DSM Viton 6.6mm Valve Stem Seal Set\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":43015236092071,"sku":"GSC1002","price":28.07,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/products\/657f174f92cf664ada304992fdd2e610.jpg?v=1672883999"},{"product_id":"gsc-p-d-4g63t-evo-1-9-90-98-dsm-set-of-32-keepers","title":"GSC P-D Mitsubishi 4G63T Evo 1-9 \/ 90-98 DSM Valve Keeper (Set Set of 32)","description":"\u003cp\u003eGSC P-D Mitsubishi 4G63T Evo 1-9 \/ 90-98 DSM Valve Keeper (Set Set of 32)\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":43015236157607,"sku":"GSC1003","price":45.82,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/products\/08e70a27aa77cd0f351dc3ed31a34034.jpg?v=1672884002"},{"product_id":"gsc-p-d-4g63t-valve-seat-oem-replacement-set-of-16","title":"GSC P-D 4G63T Valve Seat OEM Replacement (Set of 16)","description":"\u003cp\u003eGSC Replacement Valve Spring Seats, OEM replacement Valve Spring Seats are perfect for replacing old seats when upgrading to a high performance spring kit like the GSC Beehives .\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":43015236190375,"sku":"GSC1004","price":31.42,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/products\/GSCPowerDivisionlogo_2048x2048_6b6f6116-219f-4308-b3ce-5ba5b975bf36.jpg?v=1673644173"},{"product_id":"gsc-p-d-valve-seat-set-oem-replacement-ej205-ej207-ej257","title":"GSC P-D Valve Seat Set OEM Replacement EJ205\/EJ207\/EJ257","description":"\u003cp\u003eGSC OEM Replacement Valve Spring Seats are perfect for replacing old seats when upgrading to a high performance spring kit like the GSC Beehives. Same thickness as OEM,\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":43015236223143,"sku":"GSC1005","price":31.42,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/products\/GSCPowerDivisionlogo_2048x2048_dccc2058-49b0-47e0-b194-acac5a1d873c.jpg?v=1673644781"},{"product_id":"gsc-p-d-mitsubishi-evo-x-4b11t-valve-stem-seal-set-set-of-16","title":"GSC P-D Mitsubishi Evo X 4B11T Valve Stem Seal Set (Set of 16)","description":"\u003cp\u003eGSC P-D Mitsubishi Evo X 4B11T Valve Stem Seal Set (Set of 16)\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":43015236255911,"sku":"GSC1010","price":82.47,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/products\/GSCPowerDivisionlogo_2048x2048_8baa5a84-26d7-4c0c-bedd-a441a533c0ac.jpg?v=1673644386"},{"product_id":"gsc-p-d-subaru-ej-series-viton-6mm-valve-stem-seal-set","title":"GSC P-D Subaru EJ257\/EJ207\/EJ205 Viton 6mm Valve Stem Seal Set","description":"\u003cp\u003eGSC P-D Subaru EJ257\/EJ207\/EJ205 Viton 6mm Valve Stem Seal Set\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":43015236288679,"sku":"GSC1022","price":24.53,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/products\/657f174f92cf664ada304992fdd2e610_77d550ad-8f70-4bbf-b481-0bf221423bd9.jpg?v=1672884007"},{"product_id":"gsc-p-d-subaru-fa20-viton-6mm-valve-stem-seal-set","title":"GSC P-D Subaru FA20 Viton 6mm Valve Stem Seal Set","description":"\u003cp\u003eGSC P-D Subaru FA20 Viton 5.5mm Valve Stem Seal Set\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":43015236550823,"sku":"GSC1023","price":28.67,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/products\/54af33669f79a37e8956d9b25ef3dbff.jpg?v=1672884009"},{"product_id":"gsc-p-d-toyota-2jz-viton-6mm-valve-seal-kit-set-of-12","title":"GSC P-D Toyota 2JZ Viton 6mm Valve Seal Kit Set of 12","description":"\u003cp\u003eGSC P-D Toyota 2JZ Viton 6mm Valve Seal Kit Set of 12\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":43015236714663,"sku":"GSC1028","price":19.67,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/products\/c9d25507ddfd08d47eae445d582de309.jpg?v=1672884012"},{"product_id":"gsc-p-d-toyota-2jz-viton-6-6mm-exhaust-valve-guide-seal-kit-set-of-12","title":"GSC P-D Toyota 2JZ Viton 6.6mm Exhaust Valve Guide Seal Kit Set of 12","description":"\u003cp\u003eGSC P-D Toyota 2JZ Viton 6.6mm Exhaust Valve Guide Seal Kit Set of 12\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":43015236911271,"sku":"GSC1029","price":21.14,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/products\/54af33669f79a37e8956d9b25ef3dbff_e0aeb539-da29-4e66-9bcb-a0ec29e20681.jpg?v=1672884014"},{"product_id":"gsc-p-d-toyota-2jz-viton-6mm-valve-stem-seal-set","title":"GSC P-D Toyota 2JZ Viton 6mm Valve Stem Seal Set","description":"\u003cp\u003eGSC P-D Toyota 2JZ Viton 6mm Valve Stem Seal Set\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":43015237042343,"sku":"GSC1030","price":34.23,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/products\/772f5fe82a51cdfa5fb58da3d80fef80.jpg?v=1672884016"},{"product_id":"gsc-p-d-toyota-mr-2-3sgte-viton-6mm-valve-stem-seal-set","title":"GSC P-D Toyota MR-2 3SGTE Viton 6mm Valve Stem Seal Set","description":"\u003cp\u003eGSC P-D Toyota MR-2 3SGTE Viton 6mm Valve Stem Seal Set\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":43015237173415,"sku":"GSC1031","price":24.53,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/products\/657f174f92cf664ada304992fdd2e610_2f66c9cc-2e66-4ff8-b5b3-51b9c056cda0.jpg?v=1672884018"},{"product_id":"gsc-p-d-honda-b-k-h-series-viton-5-5mm-valve-stem-seal-set-of-8","title":"GSC P-D Honda B\/K\/H Series Viton 5.5mm Valve Stem Seal - Set of 8","description":"\u003cp\u003eGSC P-D Honda B\/K\/H Series Viton 5.5mm Valve Stem Seal - Set of 8\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":43015237402791,"sku":"GSC1038","price":14.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/products\/6902fac124d57a43f2fb1d651d241ffa.jpg?v=1672884020"},{"product_id":"gsc-p-d-honda-b-k-h-viton-6mm-exhaust-valve-stem-seal-set","title":"GSC P-D Honda B\/K\/H Viton 6mm Exhaust Valve Stem Seal Set","description":"\u003cp\u003eGSC P-D Honda B\/K\/H Viton 6mm Exhaust Valve Stem Seal Set\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":43015237566631,"sku":"GSC1039","price":14.87,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/products\/91a31ba51d92ba14b3701d7a8f13ed27.jpg?v=1672884023"},{"product_id":"gsc-p-d-honda-b-k-h-series-viton-5-5mm-valve-stem-seal-set-of-16","title":"GSC P-D Honda B\/K\/H Series Viton 5.5mm Valve Stem Seal - 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Valve stem seals are a critical engine component that control the amount of oil that passes down the valve stem into the combustion chamber — worn or damaged seals result in oil consumption, blue smoke on startup and deceleration, and fouled spark plugs. Replacing the valve stem seals as part of any SR20DET head rebuild or valve guide replacement is standard practice — and the GSC seal set provides a complete, platform-specific set of 16 seals (8 intake, 8 exhaust) in a single purchase.\u003c\/p\u003e\u003ch4\u003eKey Features:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eComplete 16-piece set — includes all 16 valve stem seals for the SR20DET's 16-valve DOHC head — 8 intake and 8 exhaust — in a single purchase\u003c\/li\u003e\n\u003cli\u003eSR20DET-specific dimensions — engineered to the correct seal dimensions for the Nissan SR20DET cylinder head and valve stem diameter — direct OE-replacement fitment\u003c\/li\u003e\n\u003cli\u003eQuality seal material — manufactured to OE-equivalent material and dimensional specifications for correct oil control and long-term seal integrity\u003c\/li\u003e\n\u003cli\u003eGSC Power Division quality — manufactured by GSC Power Division, a respected US engine components brand with a strong following in the Mitsubishi, Nissan, and Subaru performance engine building community\u003c\/li\u003e\n\u003cli\u003eEssential rebuild component — valve stem seals must be replaced whenever valve guides are replaced, and are strongly recommended during any head gasket replacement or cylinder head removal\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eWhy Replace Valve Stem Seals?\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Consumption Control:\u003c\/strong\u003e Valve stem seals are the primary barrier preventing engine oil from being drawn down the valve stem and into the combustion chamber during engine operation. Worn or hardened seals allow oil to pass the valve stem — resulting in increased oil consumption, blue-grey smoke on cold startup (as oil pooled in the intake port during shutdown is burned on first start), and blue smoke on deceleration (as intake vacuum draws oil past worn intake valve seals). Replacing worn seals restores correct oil control and eliminates these symptoms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark Plug Fouling Prevention:\u003c\/strong\u003e Oil passing worn valve stem seals into the combustion chamber deposits carbon on spark plug electrodes — causing misfires, rough idle, and reduced ignition reliability. Replacing the valve stem seals eliminates the oil source and allows the spark plugs to operate correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequired After Valve Guide Replacement:\u003c\/strong\u003e Whenever valve guides are replaced — as in a comprehensive SR20DET head rebuild using GSC manganese bronze guides — new valve stem seals must be installed. The guide replacement process requires removing the old seals, and the new guides' dimensional characteristics require new seals for correct oil control. Installing new guides without new seals is incorrect practice and will result in premature oil consumption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended During Head Gasket Replacement:\u003c\/strong\u003e Any time the cylinder head is removed for head gasket replacement or other service, replacing the valve stem seals is strongly recommended — the seals are inexpensive relative to the labour cost of head removal, and replacing them while the head is off eliminates the risk of seal failure requiring a repeat head removal in the near future.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecifications:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e GSC Power Division\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e GSC1052\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 16 seals (8 intake, 8 exhaust) — complete set for one SR20DET head\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Nissan SR20DET — 16-valve DOHC\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment \u0026amp; Application:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNissan SR20DET\u003c\/strong\u003e — turbocharged 2.0L DOHC 16-valve inline-four — as used in the Nissan 180SX, 200SX (S13\/S14), Silvia (S13\/S14\/S15), and related SR20DET-powered platforms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Verify SR20DET head specification and valve stem diameter before ordering. Professional installation by an experienced engine builder with the correct valve stem seal installation tool is required — incorrect installation can damage the seals and result in immediate oil consumption after rebuild.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eWhat's Included:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e16 x GSC Power Division valve stem seals — SR20DET (GSC1052)\u003c\/li\u003e\n\u003cli\u003e8 intake valve stem seals\u003c\/li\u003e\n\u003cli\u003e8 exhaust valve stem seals\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eInstallation Notes:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional installation required\u003c\/strong\u003e — valve stem seal installation requires a correct valve stem seal installation tool to press the seal onto the valve guide without damaging the seal lip. Incorrect installation — including using a socket or improvised tool — can damage the seal and result in immediate oil consumption after rebuild.\u003c\/li\u003e\n\u003cli\u003eRemove the old seals using a valve stem seal puller or pick tool — do not attempt to pry seals off with a screwdriver, which can damage the valve guide\u003c\/li\u003e\n\u003cli\u003eLubricate the valve stem lightly with clean engine oil before installing the new seal — this protects the seal lip during installation and initial engine operation\u003c\/li\u003e\n\u003cli\u003eUse the correct valve stem seal installation tool to press the new seal squarely onto the valve guide until it seats fully — verify correct seating depth before proceeding\u003c\/li\u003e\n\u003cli\u003eInstall new valve stem seals whenever valve guides are replaced — do not reuse old seals on new guides\u003c\/li\u003e\n\u003cli\u003eReplace valve stem seals during any head gasket replacement or cylinder head removal — the seals are inexpensive relative to the labour cost of repeat head removal\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003ePair With GSC SR20DET Valve Guides:\u003c\/h4\u003e\u003cp\u003eFor a complete SR20DET head rebuild, pair the GSC1052 valve stem seal set with the GSC Power Division manganese bronze valve guide sets — GSC3041-8 (exhaust guides, set of 8) and GSC3042-8 (intake guides, set of 8). New valve stem seals are required whenever valve guides are replaced — purchasing the seal set alongside the guide sets ensures you have everything needed for a complete, correct head rebuild in a single order.\u003c\/p\u003e\u003ch4\u003eWhy GSC Power Division?\u003c\/h4\u003e\u003cp\u003eGSC Power Division is a US engine components brand with a strong following in the Mitsubishi, Nissan, and Subaru performance engine building community — known for their camshafts, valve springs, retainers, valve guides, and valve train components for a wide range of Japanese performance platforms. GSC's valve stem seal set applies the same platform-specific focus to seal dimensions and material specification that characterizes their broader engine component lineup — providing a correct, complete seal set for the SR20DET in a single purchase. For SR20DET builders who want a quality seal set from a brand that understands the platform, GSC Power Division is the correct choice.\u003c\/p\u003e\u003ch4\u003ePerfect For:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSR20DET engine rebuilds where valve stem seals are being replaced as part of a comprehensive head rebuild — particularly alongside GSC manganese bronze valve guide replacement\u003c\/li\u003e\n\u003cli\u003eSR20DET head gasket replacements where replacing the valve stem seals while the head is off is the correct preventive practice\u003c\/li\u003e\n\u003cli\u003eSR20DET engines exhibiting blue smoke on startup or deceleration, increased oil consumption, or spark plug fouling caused by worn valve stem seals\u003c\/li\u003e\n\u003cli\u003eBuilders who want a complete GSC Power Division valve train component package — guides, seals, springs, and retainers — for a comprehensive SR20DET head rebuild\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Professional installation with the correct valve stem seal installation tool required. Replace seals whenever valve guides are replaced. Verify SR20DET head specification before ordering. 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