McFarlane Aviation Products - TOOL120

Part Number: TOOL120

TOOL, Cowl Saver Scoring

Free Shipping on orders over $500

Product Details

Cowl Saver™ Scoring Tool
Customize your baffle seal flexibility for optimal cooling!


Customize Cowl Saver™ engine baffle seal material to be extremely flexible for a perfect seal where it contacts the cowl and rigid elsewhere to prevent the seal from blowing past the cowl contact line.


This unique tool has three razor blades spaced 0.16" apart and makes it fast and easy to score the stiffer outer layer of the Cowl Saver™ material where more flexibility is required. The spacers also precisely control the depth of the cuts to help prevent damage to the material.  


  • You control the amount of flexibility
  • Use on a new baffle seal installation or to perfect the fit and seal of an existing installation
  • Material still meets the original AMS3306 specification to which it was certified as long as the fiberglass reinforcing layer has not been cut
  • Replaceable blade kit also available - Part Number TOOL120-BKT


To learn more, please read Cowl Saver™ Engine Baffle Seal Allows Customized Flexibility for Optimal Cooling.


Installation Instructions 


Only for use on the Teflon side of Cowl Saver™ baffle seal material.

Eligible Aircraft

Make Series Model Beginning S/N Ending S/N Eligibility Chart

Frequently Asked Questions

How much Cowl Saver material goes above and below the rivets?
Why should I purchase the Cowl Saver Scoring Tool, P/N TOOL120, if the Cowl Saver material is already scored?
My cowl seal material keeps blowing past the engine baffling creating a big air leak. Will Cowl Saver prevent this?
Should I buy a 3" roll or a flat sheet of Cowl Saver baffle seal material?
What is Bi-Flex and will it cost more than standard baffle seal material?
Which side of Cowl Saver goes against the cowl?
Why don’t we use pop rivets in P/N RIVET-KIT-2 instead of soft rivets?
Soft rivets are too hard on my hands to install, can you offer an installation tip?
I have a Cessna 185 with an IO-520-D, can I install this material?
I have a Cessna 182R with an O-470. My baffle seals do not mount on the metal shielding around the engine, rather it actually mounts in the cowling. Can I install this material?
Is Cowl Saver baffle seal material FAA-PMA approved or have an STC?
My baffle seals attach to the cowl instead of the engine baffles. Can I use Cowl Saver?
How do I repair a damaged cowl before installing Cowl Saver?

Related Videos

Product Feature: Cowl Saver

Cowl Saver Baffle Seal Material - Black side against cowling

warningWARNING: Cancer and/or Reproductive Harm -