This timing chain slack‑side guide 13091‑ZA00A is a consumable timing‑system component for Nissan QR25DE 2.5L gasoline engine. Installed on the slack side of timing chain, it restrains chain lateral swing, absorbs vibration impact and lowers friction loss while engine running, keeps timing chain running on correct track. It is aftermarket replacement for Nissan Altima, Murano, Rogue, Pathfinder Hybrid and Infiniti QX60 from 2008‑2016。
Adopts steel‑back reinforced nylon composite construction. Metal skeleton ensures mounting rigidity; high‑wear‑resistant nylon sliding surface bears long‑term friction contact with timing chain, delivers outstanding high‑temperature resistance and oil‑corrosion resistance. Precision‑positioned mounting holes fully match original installation points.
Common failure symptoms: timing chain rattling noise from engine front cover, guide surface heavy abrasion, rail cracking, aggravate timing‑chain jump risk. Normally replaced together with timing chain, tensioner and other timing components during engine overhaul. Every guide rail passes dimension inspection before shipment, no modification required for installation. Important single spare‑part for QR25DE engine timing maintenance.
