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