Twin Belt Alternator Pulley for 12A & 13B

Aluminium double belt alternator pulley to suit early 12A and 13B rotaries through to Series 5 RX-7 (vehicles with 15mm alternator shaft).

It allows a second V-belt to be added for improved reliability, particularly on high-revving engines.

Key Benefits:

• Eliminates belt slip on the alternator/water pump/cooling fan pulleys
• Shares the load between two belts
• Back-up belt if one belt fails

Standard pulley is 62mm outside diameter. Underdrive pulley is 75mm outside diameter.