General Description The primer bulb is an essential accessory for supplying fuel to your engine. Its straight design, with a diameter of 8 mm, makes it a universal choice for various vehicles. Technical Specifications Type: Straight Primer Bulb Diameter: 8 mm OE Part Number: 157973 Compatibility and Accessories This product is compatible with a wide range of vehicles, including: Peugeot 309 (3P and 5P) from 07-1989 to 12-1993 Peugeot 405 (4P and ESTATE) from 07-1988 to 10-1996 Peugeot 406 (4P and ESTATE) from 10-1995 to 04-1999 Peugeot 806 (5P) from 06-1994 to 12-2001 Peugeot Partner I (4P and FG) from 01-1997 to 12-2002 Citroën BX, C15, , Xantia, ZX, and Evasion depending on the model Installation Installing the primer bulb is simple and straightforward. Be sure to follow the instructions in your owner's manual to ensure correct installation. Use The primer bulb is used to aid in priming the fuel system, especially after an oil change or fuel filter replacement. Simply pump the bulb