• 3856961 Thermostat Kit for Volvo Penta OMC 4.3 5.0 5.8 V6 V8 160 Degree - Image 1 - XRmarine
  • 3856961 Thermostat Kit for Volvo Penta OMC 4.3 5.0 5.8 V6 V8 160 Degree - Image 2 - XRmarine
  • 3856961 Thermostat Kit for Volvo Penta OMC 4.3 5.0 5.8 V6 V8 160 Degree - Image 3 - XRmarine
  • 3856961 Thermostat Kit for Volvo Penta OMC 4.3 5.0 5.8 V6 V8 160 Degree - Image 4 - XRmarine
  • 3856961 Thermostat Kit for Volvo Penta OMC 4.3 5.0 5.8 V6 V8 160 Degree - Image 5 - XRmarine
  • 3856961 Thermostat Kit for Volvo Penta OMC 4.3 5.0 5.8 V6 V8 160 Degree - Image 6 - XRmarine
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3856961 Thermostat Kit for Volvo Penta OMC 4.3 5.0 5.8 L 350 V6 V8 160 Degree

3856961 Thermostat Kit for Volvo Penta OMC 4.3 5.0 5.8 L 350 V6 V8 160 Degree

$21.00 USD
$21.00 USD
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Shipping calculated at checkout.

Product Overview

160-degree thermostat kit for Volvo Penta and OMC marine engines. Includes thermostat, O-ring, and gasket for a complete replacement. Precision-engineered for reliable temperature regulation in marine environments.

OEM Part Numbers

  • Volvo Penta: 3856961, 3852216, 379754, 0383307
  • Mallory: 9-43021
  • GLM: 13060

Kit Includes

  • 1 � Thermostat (160�F / 71�C)
  • 1 � Thermostat O-Ring (3852071)
  • 1 � Thermostat Gasket (3852111)

Compatible Engines

Fits the following Volvo Penta and OMC marine engines:

  • 4.3L, 5.0L, 5.7L, 5.8L Ford and GM based V6 and V8 engines
  • Does NOT fit 4-cylinder engines

Before You Buy

Please verify your engine model, serial number, and year before purchasing. This application guide is for reference only. Contact us with your engine details if you need help confirming compatibility. We're happy to assist.

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Boat Owners' Review

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Before You Buy

Frequently Asked Questions

What is your refund policy?

We offer a 14-day hassle-free return on all products. Items must be unused and in original packaging. Every XRmarine part is also covered by our 1-year warranty against manufacturing defects. If something is not right, email us at info@xrmarineparts.com — replacement or full refund, your choice.

See our full Refund Policy for complete details.

How does shipping work?

Free international shipping on every order — no minimums. We ship from our global warehouse network (US, Germany, UK, Australia). Typical delivery: 10-20 business days. Tracking included.

See our full Shipping Policy.

How do you keep prices fair?

We cut out the middlemen. XRmarine sources directly from quality manufacturers and sells at honest prices. Same OEM-quality parts, no dealership markup. Every order comes with free shipping, real expert support, and a 1-year warranty.

Learn more on our About Us page.

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