Noise from Fuel Tank Insulator – 2010-2015 Mazda CX-9

2010-2015 CX-9 – NOISE FROM FUEL TANK INSULATOR

APPLICABLE MODEL(S)/VINS

2010-2015 CX-9 vehicles with VINs lower than JM3TB******460027 (produced before April 1, 2015)

 

Unusual noise while driving the vehicle.

 

The noise may be caused by a broken fuel tank (B) insulator (A) that is hanging down and contacting the propeller shaft.

broken fuel tank (B) insulator (A)

The rivets (C) may break when a load occurs. The rivet material has been changed to eliminate this concern.

 

REPAIR PROCEDURE

  1. Safely raise the vehicle on a hoist, then inspect the insulator for damaged at the rivet(s).
  2. Remove the pre-silencer from the vehicle according to the instructions on MS3 online or the Workshop Manual (section 01-15).

NOTE: (4WD Only): Disconnect the propeller shaft from the differential.

  1. Remove and discard the insulator from the fuel tank.

CAUTION: When removing the rivet pins using a drill, pay close attention not to damage the fuel tank.

  1. Install the new insulator with modified rivets.
  2. Re-install the pre-silencer according to the instructions on MS3 online or the Workshop Manual (section 01-15).

NOTE: (4WD Only): Re-connect the propeller shaft to the differential.

 

PART(S) INFORMATION

Part NumberDescriptionQty.Notes
TK31-56-398Rivet5
L214-42-741AInsulator14WD
L206-42-741AInsulator12WD
FSB8-40-305
Genuine Mazda FSB8-40-305 Exhaust Gasket
  • Product Type :Auto Part
  • Package Dimensions :11.0" L X7.0" W X3.0" H
  • Package Weight :2.0Lbs
  • Country Of Origin :China

Last update on 2026-06-17 / Affiliate links / Images from Amazon Product Advertising API


 

Gasket2Replacement parts
AJ17-40-305
Genuine OEM 2007-2013 For Mazda CX-9 exhoust System Pre-Muffler Gasket AJ17-40-305 AJ1740305
  • This is a genuine Japanese part
  • 2007-2013 For MazdaeBay logo CX-9 exhoust System Pre-Muffler Gasket
  • Part number: AJ17-40-305
  • Please verify the compatibility before making a purchase
  • To ensure fitment, match the part number or provide us your VIN

Last update on 2026-06-19 / Affiliate links / Images from Amazon Product Advertising API


 

Gasket1

 

Chevron Techron Concentrate Plus Fuel System Cleaner, 20 oz., Pack of 1
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Last update on 2026-06-16 / Affiliate links / Images from Amazon Product Advertising API


 

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Last update on 2026-06-17 / Affiliate links / Images from Amazon Product Advertising API


 

Lucas Oil 10020 Upper Cylinder Lube/Fuel Treatment - 5.25 fl oz.
  • The world’s #1 fuel additive for both gasoline and diesel engines
  • A great tune-up in a bottle – treats gasoline, diesel fuel and increases MPG
  • Cleans and lubricates the fuel system, including fuel injectors, carburetor and combustion chamber
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Last update on 2026-06-16 / Affiliate links / Images from Amazon Product Advertising API


 

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