TPI Fuel Pressure Regulator and Diaphragm Kit for 1985-1992 GM 5.0L & 5.7L
Proudly Accepting
Restore factory fuel pressure and engine reliability. This TPI Fuel Pressure Regulator and Diaphragm kit is a direct OEM-quality replacement for 1985-1992 Chevrolet Camaro, Pontiac Firebird, and Corvette models. Designed to eliminate fuel leaks and pressure drops, this kit ensures your Tuned Port Injection system maintains the precise pressure required for optimal performance and fuel efficiency.
The Cure for Hard Starts and Rough Idling
A worn or ruptured fuel pressure regulator diaphragm is a leading cause of performance issues in classic GM TPI engines. If your engine is suffering from long cranking times, a strong smell of gasoline in the vacuum lines, or poor fuel economy, it is time to refresh your fuel rail with this high-quality TPI Fuel Pressure Regulator and Diaphragm kit.
Product Features & Benefits:
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Complete Refresh Kit: Includes both the precision-stamped regulator cap and the high-grade reinforced diaphragm for a total fuel system seal.
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Direct OEM Fitment: Engineered to the exact specifications of the original factory equipment for 1985-1992 305ci and 350ci engines.
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Modern Material Science: The diaphragm is constructed from advanced elastomers that are highly resistant to the corrosive properties of modern E10 Ethanol-blended pump gas, preventing the premature "stiffening" or cracking common with older rubber designs.
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Plug-and-Play Installation: Designed as a bolt-on solution that fits perfectly onto your factory TPI fuel rail.
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Restored Atomization: By maintaining steady fuel pressure, this kit ensures your injectors provide the clean, consistent spray pattern needed for a smooth idle and crisp throttle response.
Vehicle Fitment:
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Chevrolet Camaro: 1985–1992 (5.0L & 5.7L TPI)
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Pontiac Firebird / Trans Am: 1985–1992 (5.0L & 5.7L TPI)
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Chevrolet Corvette: 1985–1991 (5.7L L98 TPI)
