JAGG Thermostatic Oil Filter Adapter - Harley Evolution & Twin Cam
About JAGG
JAGG parts and accessories are stocked at Vtwinbikers for Harley-Davidson and Indian Motorcycle applications. Every JAGG item we list is new and sourced through authorized distribution. If you are not certain a part matches your year and model, use Shop by Bike or email our team before you order and we will confirm fitment first.
The JAGG oil filter adapter with an integrated thermostatic bypass valve is an essential component for adding an oil cooler to your V-twin. It mounts between the oil filter and the engine block, providing a convenient and secure plumbing path for your oil cooler lines. This adapter ensures your engine oil is properly routed for optimal cooling and lubrication.
Why riders pick this
- Integrated thermostatic bypass for optimal oil temperature
- Flows through oil filter first for enhanced protection
- Pro Line swivel fittings for secure cooler connections
- Simplifies oil cooler installation on V-twins
- Essential for Big Twin Evolution and Twin Cam models
Designed for Big Twin Evolution and early Twin Cam models, this JAGG oil filter adapter streamlines the installation of an oil cooler by providing easy access for plumbing. Its intelligent design routes oil through the filter first, then directs it to the cooler only after the engine reaches its optimal operating temperature. This thermostatic control is crucial for faster engine warm-up, preventing over-cooling, and maintaining consistent oil viscosity.
Smart Oil Management for Cooler Engines
- Built-in thermostatic oil bypass valve ensures proper oil temperature
- Flows through the filter first for enhanced filtration before cooling
- Pro Line swivel fittings included for easy and secure oil cooler plumbing
- Provides straightforward access for oil cooler installation
Essential for Oil Cooler Integration
This JAGG oil filter adapter is a vital piece for any rider looking to add an oil cooler to their Harley-Davidson, particularly on models where direct cooler mounting is challenging. It simplifies the connection process and integrates seamlessly into your existing oil system. Ensure your V-twin benefits from efficient cooling and protected engine internals by incorporating this adapter into your performance setup.
Specifications
- Brand: JAGG
- Manufacturer Part #: 4550
- Length: 6 in
- Width: 5 in
- Height: 4 in
- Weight: 1.2 lbs
Common questions
Is this adapter required for all oil cooler installations?
This JAGG adapter is specifically designed to provide a plumbing path for oil cooler installation on Big Twin carbureted Evolution models, early Twin Cams, and is required for 2004-up Sportsters.
What does the thermostatic bypass valve do?
The thermostatic bypass valve allows oil to circulate directly to the engine, bypassing the cooler, until the engine reaches its optimal operating temperature. This speeds up warm-up and prevents over-cooling.
Does this adapter come with fittings for the oil cooler lines?
Yes, this JAGG oil filter adapter includes Pro Line swivel fittings to facilitate easy and secure connection of your oil cooler plumbing.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | JAGG |
| TYPE | Engine |
| SKU | 821-2026 |
| WEIGHT | 1.2 lb |
