The IAG Timing Belt Kit is designed as a replacement for the OEM Subaru EJ20 and EJ25 engines. The kit includes IAG Adjustable Idler Pulleys, IAG racing timing belt, IAG timing belt guide, cog, OEM idler, and timing belt tensioner.

The IAG Timing Belt Kit is designed as a replacement for the OEM EJ20 and EJ25 engines. Included in the kit are IAG Adjustable Idler Pulleys, IAG's red racing timing belt, IAG timing belt guide, OEM idler, and timing belt tensioner. The IAG Adjustable Timing Idler kit is intended to properly align the camshafts on Subaru EJ20/EJ25 cylinder heads and/or blocks that were resurfaced (“Reducing” long block length), or utilize thicker head gaskets (“Increasing” long block length). The product is precision CNC machined and hand-assembled in-house. Each idler features a machined 10mm hex enabling your socket to hold it in place while you adjust the timing to perfection. The IAG Red Racing Timing Belt works with all Subaru EJ series engines. The belts are lightweight and utilize EPDM Rubber for increased durability and performance in all climates. The Kevlar construction is 300% stronger than the OEM belt and is also three times more heat resistant. The teeth are made of H-NBR grade rubber for