2009-2011 Mazda RX-8 & 2006-2007 MazdaSpeed6 5121I Fuel Leak From Fuel Pump Mounting Rings

September 24, 2021 NHTSA CAMPAIGN NUMBER: 21V744000

Fuel May Leak From Fuel Pump Mounting Rings

A fuel leak in the presence of an ignition source increases the risk of a fire.


NHTSA Campaign Number: 21V744

Manufacturer Mazda North American Operations


Potential Number of Units Affected 13,891



Mazda North American Operations (Mazda) is recalling certain 2009-2011 RX-8 and 2006-2007 MazdaSpeed6 vehicles. Fuel may leak from the fuel pump mounting rings.



Dealers will install new fuel pump mounting rings. Dealers will also add a thermal insulation pad to the fuel tank on RX-8 vehicles. Repairs will be performed free of charge. Owner notification letters are expected to be mailed November 23, 2021. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda’s number for this recall is 5121I.



Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.


Check if your Mazda has a Recall


Chronology of Defect


Fuel leak may occurred from fuel pump mounting rings on MY 2009 through

MY2011 RX-8 and MY 2006 through 2007 MazdaSpeed6


July, 2017: Mazda received the first field report of “The Fuel leak occurred by out of target” from outside the US market. The part supplier and Mazda started to investigate the root cause. Note: the subject population at this time was included in NHTSA Recall 16V793 which affected 2004MY through 2008MY Mazda RX-8


August, 2017 through October, 2017: Mazda received second and third field reports from outside the US market. As a result of part investigation in the first case, creep fatigue damage on the fuel pump ring was confirmed through heat insulator discoloration by heat. In addition, the subject vehicle was a performance-modified vehicle. Based on the heat insulator discoloration estimation and thermal testing result, the temperature of surrounding fuel tank was higher than a normal vehicle. Accordingly, Mazda judged the cause as excessive heat exposure due to vehicle modifications. In the second case, the parts experienced the same condition but Mazda could not identify why excessive heat exposure occurred. In the third case, Mazda could not investigate the root cause due to unavailable part and unknown vehicle information. Mazda judged to monitor the field for more information.


April, 2018 through December, 2018: Mazda received 4th through 8th field reports from outside the US market, based on the part investigation the creep fatigue damage on the pump ring was confirmed but the cause of excessive heat exposure was still unknown. Mazda decided to conduct a vehicle go-and-see whenever subject vehicles visited a Mazda dealer for related concerns.


December, 2018: Mazda conducted employee surveys to confirm the difference in the fuel pump ring between normal and modified vehicles, as well as starting the re-validation of heat efficiency and material force testing.


February, 2019: Based on the employee surveys and part investigation, Mazda confirmed creep fatigue damage had occurred on the fuel pump ring in normal vehicles.


March, 2019 through August 2019: Mazda received 9th through 14th field reports from outside the US market.


September, 2019: Based on the re-validation result for RX-8, Mazda suspected insufficient margin of heat resistance performance. Therefore, the heat and material force margin study was expanded for other models.


October, 2019 through December 2019: Mazda received 15th through 18th field reports from outside the US market.


February, 2020: Based on the re-validation result, certain Mazdaspeed6 vehicles were also suspected to have insufficient material strength margin. Mazda began to study the effect of vehicle usage and environmental exposure factors on fuel pump ring deterioration.


June, 2020 through July 2020: Mazda received 19th through 20th field reports from outside the US market.


August, 2020: Based on the result of studying vehicle usage and environmental exposure factors, Mazda determined vehicles in any market may experience the defect. Mazda started to assess the necessity of proactive field action.


September, 2020 through August, 2021: Mazda received 21st through 31st field reports from outside the US market.


September, 2021: Considering the nature of the defect’s root causes, Mazda was concerned about a possible increase in cases caused by this defect in the future. Accordingly, Mazda decided to judge whether to take proactive field actions.


September 20, 2021: Mazda held a Quality Audit Committee meeting to review all available information to date. Out of an abundance of caution, Mazda has determined to conduct a proactive field action on certain MY2009 through MY2011 RX-8 and MY2006 through 2007 Mazdaspeed6 vehicles in the US and US Territories.



5 Affected Products


MAZDA RX-8 2009-2011


3 Associated Documents

Defect Notice 573 Report

RCLRPT-21V744-1366.PDF 215.482KB



Miscellaneous Document – Chronology of Defect

RMISC-21V744-3401.pdf 402.517KB



Recall Acknowledgement

RCAK-21V744-6195.pdf 645.573KB



Latest Recalls Documents




Bestseller No. 1
CRC GDI IVD Intake Valve & Turbo Cleaner
  • Proven to clean intake valves on GDI engines and turbo systems
  • Easily installed through the air intake system
  • Highest concentration PEA (Polyether Amine) detergency available
  • Proven to remove up to 46% of GDI Intake Valve deposits in 1 hour
  • 150X more concentrated than fuel additives
Bestseller No. 2
Liqui Moly 20208 Pro-Line Diesel Intake System Cleaner, 0.4 l, 1 Pack
  • It guarantees the functional performance of the moving parts and reduces fuel consumption. 
  • Increases the reliability of diesel-powered engines
  • For cleaning the entire intake system. 
Bestseller No. 4
Sea Foam SS14 Cleaner and Lube
  • Cures Hesitation, Stalls, Pings, Flat Spots And Rough Idle Due To Carbon Buildup
  • Use To Store And Fog 2-Cycle And 4-Cycle Engines
  • Helps Pass Emission Tests; Epa Registered
  • Cleans Intake Valves And Pistons
SaleBestseller No. 5
Gumout 510011 Multi-System Tune-Up, 16 oz.
  • Use in gas, ethanol/flex fuel, diesel & biodiesel engines
  • Restores fuel economy and improves engine performance
  • PEA (polyetheramine) effectively removes carbon deposits from the entire fuel & oil systems
  • Stabilizes fuel and oil for up to 2 years
  • Helps pass emissions testing, Lubricates upper cylinders, and Fights ethanol related rust & corrosion
SaleBestseller No. 6
CRC Mass Air Flow Sensor Cleaner, 4.5 Wt Oz, 05610
  • The original MAF sensor cleaner.
  • Safely cleans and protects MAF sensors.
  • Dyno proven to increase horsepower and improve air/fuel ratio.
  • Reduces rough idle, hesitation and pinging.
  • Improves fuel mileage. Plastic safe, leaves no residue.
SaleBestseller No. 7
Sea Foam SF-16-2PK Motor Treatment Multi-Use, 16 Ounce, Pack of 2, 16. Fluid_Ounces
  • Dissolves and clean fuel deposits and sticky residues from gas and diesel fuel injectors, carburetors, and combustion chambers
  • Package dimensions :5.0" L x5.0" W x8.25" H
  • Does NOT have harsh detergent or abrasive chemicals that can harm your engine
  • Country of origin :United States
Bestseller No. 8
DENCO #1930C Brake Cleaner - 15.3 FL OZ - 13 Oz Cans - 12 to 44 Per Pack (44)
  • Non - Chlorinated and Low VOC - Highly aggressive formula without cheap, harmful fillers! Performs equal to or better than more well known brands!
  • Previously reserved for car dealership techs, NOW available to the public.
  • Check the label! No excessively harmful chemicals like Methanol or Toluene. Aggressive, competitive performance without the skull and crossbones!
  • A multipurpose solvent for cleaning and degreasing various applications.
  • Safe for ABS, calipers, pads, rotors, and other brake line system parts.
SaleBestseller No. 9
Gumout 800002231 Carb and Choke Cleaner, 14 oz.
  • Helps overcome hard starting, rough idling, stalling, and high exhaust emissions
  • Quickly removes deposits from the inside and outside of the carburetor to improve engine performance and fuel economy
  • Cleans gum, varnish, and dirt from clogged carburetors and choke valves
  • Effectively cleans unpainted metal parts and is quick drying
Bestseller No. 10
FIRSTINFO 4 in 1 Intake Valve Cleaner Combustion Chamber Cleaner & Vacuum System Cleaner & Vacuum System Pressure Tester Kit
  • 【Maintain Engine Performance】-- For Air Intake Systems, Combustion Chambers, EGR Valves, Intake Valves and Oxygen Sensors. To make the fuel injectors spray smoothly and properly.
  • 【Easy to Use】-- Simply fill with air intake cleaning and connect the vacuum hose of vehicle vacuum system. Reduce carbon deposits easily.
  • 【Multiple Usages】-- Use to clean the intake valve, combustion chamber, vacuum system and test the vacuum system pressure. Provides more thorough cleaning than other methods. Effectively remove engine carbon deposits and increase gas mileage performance.
  • 【With Liquid Filled Gauge】-- The liquid-filled gauge for accurate vacuum reading and monitoring chemical flow.
  • 【Gasoline Engine / Petrol Cars Use】-- Used for gasoline engine injection and petrol cars. "NOT" for diesel injector. And solution liquid is NOT included.

Last update on 2022-08-11 / Affiliate links / Images from Amazon Product Advertising API

This product was presentation was made with AAWP plugin.

Leave a Comment

Share to...