Genuine GM Engine Coolant Pump Kit 12657499

Ensure optimal engine performance with this OEM-grade cooling system component designed for GM vehicles and compatible with heavy-duty applications.

Product Specifications

Core Features

•  Direct replacement for original equipment (GM part number 12657499)

•  Maintains engine temperature between -30°C to 100°C

•  Multi-layer composite gasket prevents coolant leakage

•  Precision-cast aluminum housing for heat dissipation

Compatible Applications

• Chevrolet Silverado HD

• GMC Sierra 2500

• John Deere 9R Tractors

• Volvo Construction Equipment

• Buick Enclave (2018-2024)

Common Failure Scenario: Coolant Leakage in Heavy Trucks

Symptom:

White exhaust smoke + low coolant level alert in Volvo FMX trucks

Diagnosis:

Worn pump seal (typically after 150,000-200,000 miles)

Solution:

1. Drain cooling system completely

2. Replace with GM 12657499 pump kit

3. Torque bolts to 18 lb-ft in crisscross pattern

About Growshine International

As a leader in heavy machinery parts and automotive components, Growshine International supplies OEM-quality solutions for:

• Construction Equipment: Excavator hydraulic pumps

• Agricultural Machinery: Combine harvester gearboxes

• Commercial Vehicles: Class 8 truck transmission kits

Explore more at:        www.ar-excel.com |        www.xinsheng2024.com

由广数供应链（CGSC）团队提供运营方案