quick view Add to Cart Air Injection Belt (SPC3431) MSRP: $35.87 This is the drive belt for the air pump. 1. On Silver Shadow & T1 models fitted with exhaust emission control (from VIN 11218 approximately) it runs off the coolant pulley.2. From 1987 to 1989 (VIN 20001 to 3000) it runs between the air pump and the... Add to Cart