Walker 211-91039 Engine Coolant Temperature Sensor

Walker Engine Coolant Temperature Sensor 211-91039

Walker Products FSK 211-91039 is an engine coolant temperature sensor for select GM applications from 1995-2002. It is built for accurate coolant temperature reporting to the engine management system, helping maintain proper fuel control, idle quality, and temperature-based engine operation.

Walker Products has supplied fuel system and engine sensor components since 1946, with manufacturing and engineering support focused on meeting or exceeding OEM standards. The Walker Products FSK line is backed by the company’s product management and technical resources for application accuracy and part consistency.

Key Features

• Engine coolant temperature sensor for select Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Pontiac vehicles
• Walker Products FSK part number 211-91039
• Supports temperature input used by the engine control system
• Built to meet or exceed OEM standards and specifications
• ISO 9001/IATF16949 certified manufacturing environment
• Cross-reference: Anchor 9385 and Standard Ignition TX66 for the same application

Vehicle Fitment

• Fits 1995-2002 Buick Century, N/A
• Fits 1996-2002 Buick Regal, N/A
• Fits 1996-2002 Pontiac Grand Prix, N/A
• Fits 1996-2001 Chevrolet Lumina, N/A
• Fits 1996-1999 Buick LeSabre, N/A
• Fits 1996-1999 Buick Park Avenue, N/A
• Fits 1995-1999 Buick Riviera, N/A
• Fits 1995-1999 Chevrolet Camaro, N/A
• Fits 1996-1999 Chevrolet Monte Carlo, N/A
• Fits 1995-1999 Oldsmobile 88, N/A
• Fits 1998-1999 Oldsmobile Intrigue, N/A
• Fits 1996-1999 Oldsmobile LSS, N/A
• Fits 1996-1999 Oldsmobile Silhouette, N/A
• Fits 1995-1999 Pontiac Bonneville, N/A
• Fits 1995-1999 Pontiac Firebird, N/A
• Fits 1999 Pontiac Montana, N/A
• Fits 1997-1998 Oldsmobile Regency, N/A
• Fits 1996-1998 Pontiac Trans Sport, N/A
• Fits 1995-1997 Chevrolet S10, N/A
• Fits 1995-1997 GMC Sonoma, N/A
• Fits 1996-1997 Isuzu Hombre, N/A
• Fits 1996-1997 Oldsmobile Cutlass Supreme, N/A
• Fits 1996 Buick Skylark, N/A
• Fits 1995-1996 Chevrolet Corsica, N/A
• Fits 1996 Chevrolet Lumina APV, N/A
• Fits 1995-1996 Oldsmobile 98, N/A
• Fits 1996 Oldsmobile Achieva, N/A
• Fits 1995-1996 Oldsmobile Cutlass Ciera, N/A
• Fits 1996 Pontiac Grand Am, N/A

Common Uses

• Corrects inaccurate coolant temperature readings
• Helps address hard starting when the engine is cold
• Supports proper fuel mixture control during warm-up
• May resolve erratic idle caused by faulty temperature input
• Can restore temperature-related engine management functions

Installation Notes

Verify the connector style and thread specification against the original sensor before installation. Confirm the application by year, make, and model, since this part number is used across multiple GM platforms including Buick Century, Chevrolet Lumina, and Pontiac Grand Prix. Clear diagnostic trouble codes after installation and check for coolant leaks or wiring damage during service.

Quality Assurance

Walker Products manufactures engine sensors to meet or exceed OEM standards and specifications. The company supports production with in-house engineering, product management, and technical documentation, and operates under ISO 9001/IATF16949 certification.