Fuel Regulator Diaphragm for 1985-1995 Chevy Camaro Pontiac Firebird 17110868

𝗣𝗿𝗼𝗱𝘂𝗰𝘁 𝗗𝗲𝘁𝗮𝗶𝗹𝘀

New replacement fuel-injection pressure-regulator diaphragm assembly for select 1985–1995 General Motors multi-port fuel-injection systems.

This is the internal regulator service assembly shown in the photos, including the diaphragm, valve, spring and support plate. It is not merely a loose rubber membrane.

Designed to replace a leaking, hardened or damaged original diaphragm while reusing the vehicle’s original fuel-pressure-regulator housing and cover.

𝗣𝗮𝗿𝘁 𝗡𝘂𝗺𝗯𝗲𝗿𝘀

• Primary OE reference: 17110851  
• Additional OE references: 17110856, 17110868, 17110874, 17112281 and 17112289  
• Standard Motor Products reference: PR10  
• ACDelco references: 217-380, 217-393, 217-394 and 217-2156  
• Delphi reference: FP10210  
• BWD reference: 21720  
• Duralast reference: PRD7  
• Airtex reference: 3G1096  
• KEM reference: 143-404  
• Tomco reference: 21007  

Part numbers are supplied for identification purposes. Compare the number, regulator design and photos with the original part before ordering.

𝗦𝗽𝗲𝗰𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀

• Product type: Fuel-pressure-regulator diaphragm assembly  
• Fuel system: Select MPFI and TPI applications  
• Mounting style: Bolt-mounted internal regulator assembly  
• Catalog pressure specification: Approximately 34–38 PSI, depending on application  
• Materials: Rubber diaphragm with metal valve, spring and support components  
• Condition: New  
• Quantity: One assembly  

𝗖𝗵𝗲𝘃𝗿𝗼𝗹𝗲𝘁 𝗙𝗶𝘁𝗺𝗲𝗻𝘁

• Camaro 2.8L V6: 1985–1989  
• Camaro 3.1L V6: 1990–1992  
• Camaro 3.4L V6: 1993–1995  
• Camaro 5.0L V8: 1985–1992  
• Camaro 5.7L V8: 1987–1992  
• Cavalier 2.8L V6: 1985–1986  
• Celebrity 2.8L V6: 1985–1986  
• Citation II 2.8L V6: 1985  
• Corvette 5.7L V8: 1986–1991  

𝗣𝗼𝗻𝘁𝗶𝗮𝗰 𝗙𝗶𝘁𝗺𝗲𝗻𝘁

• Firebird 2.8L V6: 1985–1989  
• Firebird 3.1L V6: 1990–1992  
• Firebird 3.4L V6: 1993–1995  
• Firebird 5.0L V8: 1985–1992  
• Firebird 5.7L V8: 1987–1992  
• Fiero 2.8L V6: 1985–1988  
• 6000 2.8L V6: 1985–1986  

𝗔𝗱𝗱𝗶𝘁𝗶𝗼𝗻𝗮𝗹 𝗚𝗠 𝗙𝗶𝘁𝗺𝗲𝗻𝘁

• Buick Skylark 2.8L V6: 1985  
• Cadillac Cimarron 2.8L V6: 1985–1986  
• Oldsmobile Firenza 2.8L V6: 1985–1986  
• Oldsmobile Cutlass Ciera 2.8L V6: 1986  

𝗜𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝘁 𝗙𝗶𝘁𝗺𝗲𝗻𝘁 𝗡𝗼𝘁𝗲𝘀

• This is not a universal fuel-pressure regulator.  
• Confirm the original OE number and regulator design before purchasing.  
• Intended for the listed MPFI or TPI systems; it is not a replacement for an unrelated throttle-body-injection regulator.  
• Do not order solely by vehicle model, because the same model may have used different fuel systems and regulator designs.  
• Standard PR10 application information supports the 1993–1995 Camaro and Firebird with the 3.4L V6. Compatibility with 1993–1995 3.8L or 5.7L applications should not be assumed.  
• Corvette and other performance applications may vary by engine and production configuration. OE-number verification is especially important.

𝗖𝗼𝗺𝗺𝗼𝗻 𝗦𝘆𝗺𝗽𝘁𝗼𝗺𝘀 𝗢𝗳 𝗔 𝗙𝗮𝗶𝗹𝗲𝗱 𝗗𝗶𝗮𝗽𝗵𝗿𝗮𝗴𝗺

A worn or leaking pressure-regulator diaphragm may contribute to:

• Fuel leakage around the regulator  
• Fuel entering the regulator vacuum connection, where applicable  
• Hard starting or extended cranking  
• Rough or unstable idle  
• Excessively rich or lean operation  
• Black exhaust smoke  
• Hesitation or reduced performance  
• Poor fuel economy  
• Increased exhaust emissions  

Proper diagnosis is recommended because similar symptoms can also result from a weak fuel pump, restricted filter, leaking injector, damaged regulator housing, vacuum leak or electrical fault.

𝗜𝗻𝘀𝘁𝗮𝗹𝗹𝗮𝘁𝗶𝗼𝗻

Fuel systems can remain pressurized after the engine is turned off. Relieve fuel pressure according to the vehicle service manual before beginning installation.

• Disconnect the battery before servicing the fuel system.  
• Work only in a properly ventilated area away from sparks, flames and hot surfaces.  
• Note the position of the original spring, valve and diaphragm before disassembly.  
• Inspect the regulator cover and fuel-rail sealing surfaces for corrosion or damage.  
• Tighten the retaining screws evenly to avoid distorting the cover.  
• Check carefully for fuel leaks before returning the vehicle to service.  

Professional installation is recommended.

𝗣𝗮𝗰𝗸𝗮𝗴𝗲 𝗖𝗼𝗻𝘁𝗲𝗻𝘁𝘀

• One fuel-pressure-regulator diaphragm assembly  

Fuel rail, external regulator housing, regulator cover, mounting screws and additional seals are not included unless specifically shown in the listing photos.