{"product_id":"exedy-oem-mc309-clutch-master-cylinder","title":"EXEDY OEM MC309 Clutch Master Cylinder","description":"\u003ch2\u003eEXEDY OEM MC309 Clutch Master Cylinder\u003c\/h2\u003e\u003cp\u003eThe EXEDY OEM MC309 clutch master cylinder is an OE-style hydraulic replacement for manual transmission Chevrolet and GMC trucks, vans, and SUVs from 1982-1991. It is built for direct-fit service on a wide range of 10-spline applications, including Chevrolet Blazer, C\/K Series, and GMC Jimmy models.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEXEDY OEM clutch master cylinder for manual transmission hydraulic systems\u003c\/li\u003e\n\u003cli\u003ePart number MC309 for accurate ordering and catalog matching\u003c\/li\u003e\n\u003cli\u003eOE-style replacement for Chevrolet and GMC applications\u003c\/li\u003e\n\u003cli\u003eFits 1982-1991 vehicles listed below with 10-spline configurations\u003c\/li\u003e\n\u003cli\u003eCoverage includes Blazer, Jimmy, C\/K trucks, Suburban, and van platforms\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eEXEDY OEM MC309 is a clutch master cylinder for manual transmission vehicles that use hydraulic clutch actuation. This part number is listed for 1982-1991 Chevrolet and GMC applications, including Chevrolet Blazer, GMC Jimmy, Chevrolet C10\/C20\/C30, K10\/K20\/K30, and related Suburban and van models. Fitment notes vary by vehicle and clutch setup, so matching the year, model, and clutch configuration is important when selecting the correct replacement.\u003c\/p\u003e\u003cp\u003eThis part cross-references OE-style replacement listings for the same application. The MC309 designation helps simplify lookup when servicing Chevrolet and GMC manual transmission clutch hydraulics.\u003c\/p\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 1991 Chevrolet Blazer, N\/A — 11\" Disc, To 1\/31\/91; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987-1990 Chevrolet Blazer, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 Chevrolet C10, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1983-1984 Chevrolet C10, N\/A — 11-7\/8\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 Chevrolet C10 Suburban, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1982-1984 Chevrolet C10 Suburban, N\/A — 11-7\/8\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 Chevrolet C20, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1982-1984 Chevrolet C20, N\/A — 11-7\/8\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 Chevrolet C20 Suburban, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1982-1984 Chevrolet C20 Suburban, N\/A — 11-7\/8\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 Chevrolet C30, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1982-1984 Chevrolet C30, N\/A — 11-7\/8\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 Chevrolet K10, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1982-1984 Chevrolet K10, N\/A — 11-7\/8\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 Chevrolet K10 Suburban, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1982-1984 Chevrolet K10 Suburban, N\/A — 11-7\/8\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 Chevrolet K20, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1982-1984 Chevrolet K20, N\/A — 11-7\/8\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 Chevrolet K20 Suburban, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1982-1984 Chevrolet K20 Suburban, N\/A — 11-7\/8\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 Chevrolet K30, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1982-1984 Chevrolet K30, N\/A — 11-7\/8\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 Chevrolet K5 Blazer, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1988-1989 Chevrolet S10, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1988-1989 Chevrolet S10 Blazer, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987 Chevrolet R10, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987 Chevrolet R10 Suburban, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987-1988 Chevrolet R20, N\/A — R \u0026amp; V Series; 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987 Chevrolet R20 Suburban, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987-1988 Chevrolet R30, N\/A — R \u0026amp; V Series; 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1988 Chevrolet R10 Suburban, N\/A — 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1988 Chevrolet R20 Suburban, N\/A — 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1989 Chevrolet R2500, N\/A — 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1989 Chevrolet R3500, N\/A — 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1990 Chevrolet R3500, N\/A — R \u0026amp; V Series Pre-Damped; 11-7\/8\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1991 Chevrolet R3500, N\/A — R \u0026amp; V Series ; 11-7\/8\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987 Chevrolet V10, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987 Chevrolet V10 Suburban, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987 Chevrolet V20, N\/A — R \u0026amp; V Series; 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987 Chevrolet V20 Suburban, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1988 Chevrolet V10 Suburban, N\/A — 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1988 Chevrolet V20 Suburban, N\/A — 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1988 Chevrolet V30, N\/A — R \u0026amp; V Series; 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1989-1991 Chevrolet V1500 Suburban, N\/A — 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1989-1991 Chevrolet V2500 Suburban, N\/A — 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1989-1991 Chevrolet V3500, N\/A — 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 GMC C1500, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 GMC C1500 Suburban, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 GMC C2500, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 GMC C2500 Suburban, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 GMC C3500, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 GMC G1500, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987 GMC G1500, N\/A — 12\" Diaph Clutch, Non-Pre Damped; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 GMC G2500, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987 GMC G2500, N\/A — 12\" Diaph Clutch, Non-Pre Damped; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 GMC G3500, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987 GMC G3500, N\/A — 12\" Diaph Clutch, Non-Pre Damped; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1991 GMC Jimmy, N\/A — 11\" Disc To 1\/31\/91; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1985-1987 GMC Jimmy, N\/A — 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987 GMC R1500, N\/A — R \u0026amp; V Series; 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987 GMC R1500 Suburban, N\/A — R\u0026amp;V Series; 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1988-1991 GMC R1500 Suburban, N\/A — R\u0026amp;V Series 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987-1988 GMC R2500, N\/A — R \u0026amp; V Series; 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1988 GMC R2500, N\/A — R\u0026amp;V Series; 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1989 GMC R2500, N\/A — R\u0026amp;V Series 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987-1988 GMC R3500, N\/A — R \u0026amp; V Series; 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1989-1991 GMC R3500, N\/A — R\u0026amp;V Series 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987 GMC V1500, N\/A — R \u0026amp; V Series; 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987-1990 GMC V1500 Suburban, N\/A — R\u0026amp;V Series 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987 GMC V2500, N\/A — R\u0026amp;V Series; 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987-1990 GMC V2500 Suburban, N\/A — R\u0026amp;V Series 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1987-1988 GMC V3500, N\/A — R \u0026amp; V Series; 11\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1989-1990 GMC V3500, N\/A — R\u0026amp;V Series 12\" Diaph Clutch with Ceramic Button; 11-3\/4\" Disc; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1991 GMC C1500, N\/A — 11\" Disc To 1\/31\/91; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1991 GMC C2500, N\/A — 11\" Disc To 1\/31\/91; 10 Spline\u003c\/li\u003e\n\u003cli\u003eFits 1991 GMC C3500, N\/A — 11\" Disc To 1\/31\/91; 10 Spline\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVerify the year, make, model, and clutch configuration before ordering.\u003c\/li\u003e\n\u003cli\u003eMatch the clutch disc size and spline count listed in the fitment notes.\u003c\/li\u003e\n\u003cli\u003eConfirm whether the vehicle uses an R \u0026amp; V Series setup, a ceramic button clutch, or a non-pre-damped arrangement.\u003c\/li\u003e\n\u003cli\u003eInspect the hydraulic system for wear or contamination before installing the replacement master cylinder.\u003c\/li\u003e\n\u003cli\u003eBleed the clutch hydraulic system after installation to restore proper pedal feel and engagement.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eEXEDY OEM supplies OE-style clutch components for manual transmission service. MC309 is cataloged as a direct replacement master cylinder for the listed Chevrolet and GMC applications, with fitment tied to the original clutch system configuration.\u003c\/p\u003e","brand":"EXEDY OEM","offers":[{"title":"Default Title","offer_id":52412237578421,"sku":"BBMK-MC309","price":38.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/EY_MC309_Fro.jpg?v=1777786679","url":"https:\/\/www.partcatalog.com\/products\/exedy-oem-mc309-clutch-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}