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Aftermarket parts may appear slightly different, including the packaging.
PERKINS
COOLING SYSTEM, THERMOSTATS
3771K121 Thermostat Housing For Perkins 1006-6 Diesel Engines
$469.59 USD$521.77 USDSAVE 10%
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Keep your Perkins diesel engine running with this thermostat housing — OEM part number 3771K121. It fits Perkins 1006-6 engines.
Delta Diesel Parts is a U.S.-based supplier of Perkins diesel engine parts, with most in-stock orders shipping the same day and knowledgeable support staff to help you when it's needed.
| Part Number | 3771K121 |
| OEM Number | 3771K121 |
| Part Type | Thermostats |
| Specification | Genuine Thermostat Housing for Perkins diesel engines. |
| OEM Brand | Perkins |
| Compatible Models | 1006-6 |
Sale price
$469.59 USD
Regular price
$521.77
Unit price
Unavailable
Feb 12, 2026
Great service provided.
Order was received prior to expected date. Really appreciate the urgency given.
Jan 28, 2026
Exceeded Expectations!
Even though my parts were not in stock, they were ordered and delivered ahead of expected time. Will order from them again.
Jan 5, 2026
Excellent, friendly service.
This is my new go to business for Yanmar parts. I highly recommend it.
