CUSTOMER SERVICE 989.748.4145 info@dieselfreak.com

Cat Fixed Fuel Saver Harness

$175.00

Do you own an electronic caterpillar engine?

Save fuel and run better too. What you are buying are the best power harnesses on the market. They have been built and tested by a CAT master mechanic. They were developed and tested for two years before being sold to the public. Many have imitated but never duplicated the Diesel Freak brand of caterpillar power harnesses.

Horse Power gains on a stock engine will be 30 to 45 more and increases in fuel mileage have been from .5 mpg to as high as 2 mpg depending on the application. These harnesses were built, for one thing, that was to increase fuel mileage.

They can save you thousands of dollars in fuel costs. The harnesses are professionally built and tested before shipping. They are made in the USA and carry a limited warranty. If for any reason you do not like the results I offer a 100% money back guaranty. Simply return the product within 60 days for a full refund.


These harnesses will not work on the 3126 or the bridge, engine serial number prefix MBN, or MBL. We do not have a harness that works on the C-15 SDP or the C-13 LEE serial. 

When placing an order I must have your engine serial to make sure you get exactly what your engine needs.


For additional power gains, we offer personalized ECM tuning. Contact us for more information regarding personalized tuning.

Diesel Freak, LLC is not affiliated with Caterpillar or the Caterpillar brand.

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Additional information

Weight 3 lbs
Dimensions 13 × 10 × 1 in
Engine Prefix

1LW, 1MM, 1YN, 2KS, 2WS, 4AS, 5DS, 5EK, 6NZ, 6TS, 7CZ, 9NS, 9NZ, BXS, C2A, KCA0001-KCA6122, KCA6123-KCA9999, KCB00001-KCB39998, KCB39999-KCB99999, MXS00001-MXS25317, MXS25318-MXS99999, NXS