McFarlane Aviation Products - BSC-KT-4

Part Number: BSC-KT-4


Eligibility Notice

Please verify that this product is eligible for your aircraft before adding it to your cart.

Click here to view product eligibility.

Product Details



BSC-KT-4 Kit Components
Part Number
Seal, Baffle, Rear Left
Seal, Baffle, Rear Center Assy
Seal, Baffle, Rear Right 
Seal, Baffle, Lower Left
Seal, Baffle, Lower Right
Seal, Baffle, Front Left
Seal, Baffle, Front Right
Seal, Baffle, Left Cylinder
Seal, Baffle, Right Cylinder
Retainer Strip
Soft Rivet



FAA-PMA Approved Baffle Seals for Cessna 150 & 152 Aircraft

Reduce airframe vibration, cowl cracks, and firewall cracks

with our complete Cowl Saver™ kits! 



  • Unbeatable performance – ideal balance of flexibility and stiffness
  • Full kit to enclose engine compartment

  • Save $$$ on labor and cowl wear


  • 30x less friction – eliminating cowl erosion
  • Reduce fatigue and expensive baffle, cowl and firewall repairs
  • Eliminate guess work! Kits include all required baffle seals, soft rivets, and McFarlane P/N 6036-012 retainer strips
  • Cut to fit, saving you time and money
  • Individual baffles available for sale




Bi-Flex™ Technology
Precision laser engraved flex pattern ensures optimum flexibility/stiffness combination for maximum cooling and minimum friction. For more information, please read Customized Flexibility for Optimal Cooling.



Cowl Saver™ Scoring Tool

Customize your baffle seal flexibility for optimal cooling! 



  • 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




McFarlane Fuel valves for Cessna 150 and 152 also available.

An all new improved valve for the price of repairing your old one.

Kit Components

Part Number BSC-KT-4 contains the following:

Component Description Quantity U/M
6036-012 RETAINER STRIP, Baffle Seal 14.000 EACH
MC0450502-28 SEAL, Baffle, Rear Left 1.000 EACH
MC0450502-29 SEAL, Baffle, Rear Center Assy 1.000 EACH
MC0450502-30 SEAL, Baffle, Rear Right 1.000 EACH
MC0455000-13 SEAL, Baffle, Lower Left 1.000 EACH
MC0455000-6 SEAL, Baffle, Lower Right 1.000 EACH
MC0455000-7 SEAL, Baffle, Front Left 1.000 EACH
MC0455001-10 SEAL, Baffle, Front Right 1.000 EACH
MC0455001-7 SEAL, Baffle, Left Cylinder 1.000 EACH
MC0455001-8 SEAL, Baffle, Right Cylinder 1.000 EACH
MS20470A4-5 RIVET 0.531 1/8#

Related Categories

Eligible Aircraft

Make Series Model Beginning S/N Ending S/N Quantity Per Aircraft Location Eligibility Chart
Cessna 150 150L 15072004 15075781 1 Cessna 150L & M Baffle Seal Kit Parts List 7719
Cessna 150 150M 15075782 15079405 1 Cessna 150L & M Baffle Seal Kit Parts List 7719
Cessna 150 A150L A1500227 A1500523 1 Cessna 150L & M Baffle Seal Kit Parts List 7719
Cessna 150 A150M A1500524 A1500734 1 Cessna 150L & M Baffle Seal Kit Parts List 7719
Cessna 150 F150L F15000659 F15001143 1 Cessna 150L & M Baffle Seal Kit Parts List 7719
Cessna 150 F150M F15001144 F15001428 1 Cessna 150L & M Baffle Seal Kit Parts List 7719
Cessna 150 FA150L (when equipped w/FKA150-2311 & FKA150-2316) FA1500121 FA1500261 1 Cessna 150L & M Baffle Seal Kit Parts List 7719
Cessna 150 FA150M (when equipped w/FKA150-2311 & FKA150-2316) FA1500262 FA1500336 1 Cessna 150L & M Baffle Seal Kit Parts List 7719

Related Product Catalog Pages

Cowl Saver Product Flyer

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

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