5284903 Engine Thermostat 180°F 82°C for Cummins ISC ISL QSL 8.3L 8.9L Engines

5284903 Engine Thermostat – High-Quality Aftermarket Replacement for Cummins Engines

Maintain optimal engine temperature in your Cummins-powered vehicle or equipment with this premium aftermarket 5284903 thermostat (180°F opening). Engineered as a direct OEM replacement, it provides precise temperature regulation to prevent overheating, improve fuel efficiency, and protect engine components in heavy-duty applications.

Key Benefits for Contractors and Operators

• Prevents Overheating: Opens at 180°F for reliable coolant flow, reducing risk of engine damage in demanding conditions.
• Direct Fit Installation: Matches genuine Cummins specs for quick, no-modification replacement – easy to install during routine maintenance.
• Built Tough for Heavy Duty Use: High-grade construction resists heat, corrosion, and wear for long-lasting performance.
• Cost-Effective Alternative: OEM-level reliability at aftermarket pricing – ideal for fleet owners and budget-conscious operations.
• Fast Shipping: In stock and ready to ship within 1-3 days.

Compatible Cummins Engines

This thermostat is commonly used in engines including (verify your engine’s parts manual for exact fit):

• ISC 8.3L
• ISL 8.9L / QSL 9L
• QSC 8.3L
• 6C8.3 / 6CT series

Specifications

Questions? Contact us for fitment confirmation or bulk pricing. We stand behind our parts with fast shipping and easy returns.