Key Features

• Genuine John Deere OEM thermostat, Part M811034, engineered for correct fit and reliable cooling performance.
• Regulates coolant flow to maintain the engine within its optimal operating temperature window, supporting consistent horsepower and fuel economy under load.
• Direct replacement with no modification required, designed to drop into compatible cooling systems as a seamless OEM fit.
• Robust construction tailored for demanding agricultural and industrial applications, withstanding vibration, heat cycles, and contaminants common in field use.
• OEM-equivalent cross-reference: M801088 on some equipment, aiding cross-compatibility discussions without compromising fit or function.

Product Details

• Product Type: Engine cooling thermostat
• Part Number: M811034
• OEM Equivalent: M801088
• Brand: John Deere
• Function: Regulates coolant flow to maintain proper engine temperature
• Temperature Rating: Typically ~160 °F (approx. 71 °C) in many applications
• Notes: Genuine OEM component designed to preserve the integrity of the machine’s thermal management system and prevent overheating or overcooling.

Compatibility

• Fits John Deere engines and equipment that require part M811034, spanning a broad range of models and configurations.
• Compact & Utility Tractors: examples include 2027R, 2032R, 2036R, 2038R, 2500, 2500A, 2500E, 2520, 2720, 3005, 3025D/E, 3028EN, 3032E, 3033R, 3035D, 3036E/EN, 3038E, 3038R, 3039R, 3043D, 3045R, 3046R, 3120, 3203, 3215, 3225, 3235, 3245C, 3320, 3325, 3365, 3520, 3720.
• Lawn, Turf & Fairway Mowers: 110, 110TLB, 1445, 1505, 1515, 1545, 1565, 1570, 1575, 1580, 1585, 1600, 1620, 1905, 3215A/B, 3225B/C, 3235A/B/C, 7500A, 7700, 8000A, 8500, 8700, 8800, 8900A, 9009A, F1145, Z997R, 997, 990.
• Construction & Loader Equipment: Excavators 25, 27D, 30, 30G, 35D, 35G, 50, 50D, 50G; Skid Steer Loaders 312GR, 314G, 316GR, 317G, 318G, 4475, 5575, 6675, 7775; Loaders/Graders 570, 575; Telehandlers 4400, 4500; Mustang models (similar applications).