DK Custom Products

Phone: 662.252.8828
Text: 662.420.4891
Email: [email protected]

Wideline Oil Cooler System for Harley-Davidson Motorcycles

Availability: In stock
Item #: DK-J-750-2000
Manufacturer: Jagg


Wideline Oil Cooler System for Harley Motorcycles DK Custom High Flow Performance Dyna Cooler Running Motor Jagg HD 10 row Black Softail Touring Trike Freewheeler Big Twin Evo Milwaukee Eight Sportster




HyperFlow Technology

DK Custom Products Is Proud to Use & Recommend Jagg Oil Coolers



  • Ten Row, Two Pass Design for Superior Cooling
  • Durable Black Powder Finish
  • HyperFlow Technology w/ in-line Turbulators
  • Thermostat Controlled
  • Durable Uralite Shock Absorbing Mount Brackets
  • Anti-Rotation Device Included
  • Optional Braided Hose Kits
  • Complete Oil Cooler  Kit w/ Everything supplied for an E-Z BOLT-ON INSTALL
  • Step-by-Step Instruction Included


 Superior Quality, Style & Performance

 Cooler oil makes engines last longer!  The turbulators in each oil passageway gently stir oil, exposing it to more critical heat dissipation surface area for superior cooling with minimal oil pressure restriction.


At DK Custom Products we use Jagg Oil Coolers on our own Bikes, and are happy to make them available to our Customers. 

  • The cooler mounts to the left frame down-tube, spaced away from the frame to allow airflow to both the oil cooler and engine's cylinder.
  • The cooler is mounted to the frame using unique, highly-durable, Uralite mounts which have a shock-absorbing effect and clean styling.
  • The Wideline Oil Cooler's, Ten-tube, two-pass design is EXTREME PERFORMANCE in a Compact Package, providing significantly More cooling surface than our closest competitor. Special in-line turbulators add to the cooler's efficiency with minimal oil pressure loss or restriction.
  • Aluminum construction with durable powder coated finish. The Wideline is a High Performance oil radiator with smooth end caps that blend into the frame for a Stealth Look.
  • Jagg's unique thermostatically-controlled offset oil filter adapter provides an easy access point to the bike's oil supply for the installation of the oil cooler.
  • The Adapter is machined from two pieces of billet aluminum and installs between the bike's stock oil filter mount and the oil filter, and is designed with the same HyperFlow Technology as all Jagg components to ensure great performance as well as great flow characteristics.
  • The Wideline Oil Cooler Kit is supplied complete with all necessary hardware and detailed, easy-to-follow instructions.
  • Upgrade to a Braided Hose with Color Matched Hose Separators and Hose Finishers.  Available in Bright Stainless Steel Braid or Black Lightweight Fiber Braid.  Click HERE for full details on the Braided Hose options, or look at pictures above.



Fitment:  The Wideline Oil Cooler System was designed especially for Harley-Davidson Motorcycles, but will also fit any motorcycle with vertical frame tubes.  HD's with lower fairings do not have enough room for these, instead, use a low mount cooler.


These Charts showing normal operating temps are Directly from the Harley Manual:





Why Do We Use & Recommend Jagg Oil Coolers?

HyperFlow Technology is the engineered balance between performance and flow. It should first be described as a "systems" way of thinking.

Air flow, fins, oil flow, turbulators, brazing technology, metal finish, oil filter adapter design, thermostatic actuator, etc., are each components maximized to contribute to the overall system. It is only when each individual component is considered in relation to its contribution to the whole that a true systems approach can be claimed.


Frequently Asked Questions:

At what temperature does the automatic thermostatic by-pass operate?

The actuator begins to move at 185ºF. By 195ºF it is fully-actuated, plugging the by-pass hole, and directing 100 percent of the oil's flow to the oil cooler.

Which direction does oil flow in these oil coolers?

There is no "In" or "Out" on Jagg oil coolers. Whichever port the oil enters, it exits the other one.

Why do I need an oil filter adapter?

Oil filter adapters provide an easy way to access the motorcycle's oil supply for the installation of an oil cooler. Jagg oil filter adapters direct oil through the filter first and then to the cooler. This is especially important on the pressure side of the engine. This allows the warmer, thinner oil to flow easily across the oil filter, and then on to the oil cooler, and then send clean, cool oil to the engine.


These Charts showing normal operating temps are Directly from the Harley Manual:





Customer Reviews

Jagg Oil Cooler on Low Rider S Review by DynaBro
Works really well with slight modification to the anti-rotation clip. Maybe the twin cam 110 is slightly tighter between the oil filter location and engine cases? But to fit i had to hand file a notch in the clip. It actually ended up fitting really well and the cooler is perpendicular and won’t rotate in either direction.

Really high quality and the thermostat bypass is working well. I think this is a better design than the factory oil cooler. I’ve had both. (Posted on 10/16/2020)

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.