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Lower Housing Thermostat Flange 6674167 6655966 for Bobcat 325 328 331 334 337
$206.99
Sale price
$206.99
Regular price
Available to Order
This lower thermostat housing flange is an aftermarket replacement for compatible Bobcat compact excavators using 6674167 or 6655966.
Not sure which part fits your equipment?
Our Northline Parts team can help you find the right replacement. Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT | Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
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Product Overview
The lower thermostat housing forms a sealed coolant passage around the thermostat and adjoining hoses. A cracked housing, damaged flange, or corroded sealing surface can lead to coolant leaks and loss of cooling-system pressure.
This part replaces 6674167 and 6655966. Compare the hose necks, bolt pattern, thermostat opening, and sensor ports before purchase.
Key Features & Performance
- Restores a secure thermostat and coolant connection
- Helps repair leaks from a cracked lower housing
- Direct replacement casting for compatible engines
- Suitable for cooling-system service
Fitment & Compatibility
Compatible with select Bobcat 325, 328, 331, 334, and 337 excavators. These machines may use different engine arrangements, so serial-number verification is important.
Technical Specifications
- Product Type: Lower Thermostat Housing / Flange
- Compatible Brand: Bobcat
- Part Number(s): 6674167, 6655966
- Condition: New
Frequently Asked Questions
Q: Should I reuse the old thermostat and gasket? A: Inspect both parts carefully. Replacing the thermostat seal or gasket during housing service is often appropriate when they are worn or disturbed.
Q: Is this an original OEM part? A: This is an aftermarket replacement; brand names and part numbers are used only to identify compatibility.
Compatibility may vary by serial number, production date, or equipment configuration. Verify fitment before purchase.