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Idler Pulley Adjustment Wheel 16603-38011 for Lexus GX460 URJ150 & LX570 URJ201

Name: Idler Pulley Adjustment Wheel 16603-38011 for Lexus GX460 URJ150 &amp; LX570 URJ201
SKU: C1688-747373542231
Availability: InStock

$17.07

Shop high-quality water pump belt adjustment pulley 16603-38011 for Lexus GX460 & LX570. Durable steel construction ensures smooth engine operation and belt tension.

100 in stock

Full description

SKU: C1688-747373542231 Category: Idler Pulley Tags: 16603-38011, belt tensioner pulley, Lexus GX460 water pump pulley, LX570 belt idler, Toyota 1UR engine pulley, URJ150 engine parts

Description

Key Selling Points

Perfect Fitment Guarantee: Specifically engineered for Lexus GX460 (2012-2019) and LX570 (2012-present) models with 1UR/3UR engines, replacing OEM part number 16603-38011.
Engine Noise Reduction: Precision-engineered internal bearings provide smooth, quiet rotation, effectively eliminating chirping or grinding noises caused by worn water pump belt pulleys.
Durable Steel Construction: Manufactured from high-grade alloy steel to withstand extreme engine temperatures and high-speed belt friction for long-lasting performance.
Direct OE Replacement: Designed as a bolt-on solution to match factory specifications, ensuring proper belt tension and preventing slippage or premature belt wear.
Enhanced System Reliability: Critical component for the engine accessory drive system that maintains water pump efficiency and prevents cooling system failures.

Technical Specifications

Part Number	16603-38011
Compatible Engines	4.6L V8 (1UR-FE), 5.7L V8 (3UR-FE)
Placement on Vehicle	Engine Accessory Drive (Front)
Material	High-Strength Steel & Precision Bearings
Fitment Type	Direct Replacement

FAQ Q&A

Q: What are the signs that I need to replace this adjustment pulley?

A: Common symptoms include a high-pitched squealing or chirping noise from the front of the engine, excessive belt vibration, or visible wear and wobbling of the pulley wheel while the engine is running.

Q: Will this 16603-38011 pulley fit a 2015 Lexus GX460?

A: Yes, this part is specifically designed for the URJ150 chassis (GX460) for model years covering 2012 through 2019, including the 2015 model.

Q: Does this part include the mounting bolt?

A: This product consists of the adjustment pulley assembly itself. In most cases, you will reuse the original factory mounting bolt, provided it is in good structural condition.