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Jagg Oil Cooler FAQ


What sets Jagg apart from the competition?

You will not find an oil cooler that offers the combination of durability, performance, and flow of the Jagg oil cooler at any price. It is this combination that has allowed Jagg to remain the choice of TOP teams and builders across all venues of motorsport.

Brazing technology

Generations ago, Jagg was already at the forefront of brazing research and development. The brazing process itself is the variable most often overlooked when considering performance of an oil cooler, and it is Jagg's continued brazing research and development have allowed them to remain the leader in performance and reliability. While competitors are brazing aluminum oil coolers merely as a method of construction, Jagg's blend of experienced craftsmen and technological methodology allow this step to afford an even greater performance advantage.

Internal design



Jagg Oil Coolers employ an in-line turbulator to gently stir the oil, ensuring that the oil is exposed to the entire internal surface area of the oil cooler with the least pressure loss. Jagg has been a pioneer of efficient turbulator design. Jagg turbulators are fully brazed to the entire internal length of the tube, resulting in "zero" heat transfer barrier and high strength.

Fin design



The fin is the most considered and most visible cooling portion of any oil cooler. Made in-house to exacting standards, the fin not only contributes to cooler performance but to durability as well. Jagg fins are fully brazed, resulting in "zero" heat transfer barrier. Each fin section employs precise mini-louvers to further the effectiveness of the air as it travels across the cooler.

Frequently Asked Questions

1.      How does the performance and flow of a Jagg Oil Cooler compare to the competition?
Jagg Oil Coolers, with Hyper-Flow Technology, consistently perform better than the competition. There is no other oil cooler in the world that can approach the heat rejection while maintaining the high flow/low pressure-drop. Conversely, if the flow is approached it is at the expense of lowering heat rejection ability.

2.      Do I need an oil cooler?
Only if your motorcycle gets hot.

3.      Do I need a thermostat?
If you wish for your oil to by-pass the oil cooler until engine oil temperatures reach circa 190ºF, then choose a thermostat.

4.      How does the manual bypass valve work?
When the arrows of the by-pass knob are dialed toward the oil cooler, the oil has no choice but to travel to the cooler and return to the system. When the arrows on the by-pass knob are directed across the body of the by-pass, the oil will follow the immutable laws of physics and choose the path of least resistance...returning to the system.

5.      How much can I expect your oil cooler to lower my temperature?
There are many variables associated with a specific answer to this question. While Jagg possesses the computational fluid dynamics programs and in-house oil-cooler-testing facilities to provide specific output, given specific input parameters, they prefer to state that thier coolers are designed to bring your oil to within a standard operating range.

6.      Why is Jagg better?
Jagg Oil Coolers are legitimate oil radiators offering greater surface area, flow dynamics, and durability than the competition.

7.      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.

8.      Will a Jagg cooler decrease my oil pressure?
Jagg Oil Coolers are engineered to strike the perfect balance between performance and flow. Square-inch to square-inch, there is no oil cooler that offers the combination of performance and low-pressure drop that a Jagg Oil Cooler offers. The Jagg Oil Cooler philosophy is a "systems" approach. While Jagg components individually offer less flow restriction than the competition, the significant object is the balance of performance and flow within the entire system.

9.      Why is one of the ports on my oil cooler white while the other one is black?
After the brazing process, Jagg oil coolers are fine-media blasted to ensure a uniform primary finish. To prevent entry of the media-blast material, the ports are plugged. During the powdercoating process, handlers will remove at least one of the plugs to ensure that pressure differential throughout the curing process will not cause a plug to blow out, bounce around, and stick to the gel-like powder. This would ruin the finish. Before consumer packaging, the final plug is removed, revealing the original, raw-aluminum finish.

10.      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.

11.      Do you offer a warranty on Jagg products?
Jagg has never published a warranty; however, Jagg stands behind its products and desires satisfied customers. Jagg manufactures the highest quality, highest performing oil coolers on the market. If you are dissatisfied with Jagg products, a Jagg representative stands ready to amicably resolve your dissatisfaction.

12.      Does Jagg make oil coolers as private-label brands for other manufacturers?
No. Jagg is the most prominent aftermarket oil cooler brand, and it is the only brand that they produce.

13.      What should my oil pressure be?
It is recommended that you consult your specific motorcycle manufacturer's service manual.

14.      How much oil capacity does your cooler add to my bike?
A 6-row oil cooler will add approximately 6oz.

15.      Does my oil need to reach 212° to burn off the water?
No. Water prefers to separate from oil at ambient temperature. When the water/water vapor in your oil system encounters any hot engine component, the separation process is accelerated.

16.      What is the life of the automatic thermostat?
Estimated to be greater than 10,000 cycles. (1 cycle = each time the actuator has actuated and contracted.)