Ford SB 289 302 351W 351C Serpentine Billet Aluminum Pulley Kit Speedmaster Keychains are the perfect

Speedmaster Keychains are the perfect way to let everyone know where you go for high performance aftermarket parts and accessories

it features two sealed single-row ball bearings to ensure smooth operation under high loads

these caps have a one way valve

they can be reused without damaging the fitting

diameter mounting hole

Ford SB 289 302 351W 351C Serpentine Billet Aluminum Pulley Kit Speedmaster Keychains are the perfectConverts traditional V belt pulleys to a serpentine system while retaining existing brackets. Designed for high revving street and race applications to improve belt alignment and reduce slippage. Helps prevent belt throwing under demanding conditions.