| โThis site contains affiliate links for which OEMDTC may be compensatedโ |
August 20, 2020 NHTSA CAMPAIGN NUMBER: 20E057000
Insufficiently Crimped Brake Master Cylinder
If the piston pops out of the master cylinder housing, a complete loss of braking or unintended brake application can occur, increasing the risk of a crash. Owners may initially notice brake fluid leaking onto the vacuum booster, or a change in brake pedal travel and feel.
NHTSA Campaign Number: 20E057
Manufacturer Motorcar Parts of America, Inc.
Components SERVICE BRAKES, HYDRAULIC
Potential Number of Units Affected 2,403
Summary
Motor Parts of America, Inc. (MPA) is recalling certain Duralast NM4222 and NM55381 brake master cylinders sold as aftermarket replacement parts for 2012-2017 Volkswagen
Beetle, 2005-2018 Volkswagen Jetta and 2007-2010 Volkswagen Jetta GLI vehicles. The crimping of the aluminum housing may be insufficient, allowing the master cylinder piston to pop out of the housing.
Remedy
MPA will notify owners directing them to take the component to an AutoZone store to return the recalled Master Cylinder for a full refund. Exchanges for replacement Master Cylinders can occur after October 1, 2020. This recall began August 28, 2020. Owners may contact MPA customer service at 1-833-758-0239 or email recall@motorcarparts.com.
Notes
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.safercar.gov.
Supplemental Information for Equipment Report — 20E-057
1) Additional Information on Brand Name
| Customer | Part | Brand | Vehicle Applications |
| AutoZone | NM4222 | Duralast | 2005-2008 VOLKSWAGEN: JETTA |
| Factory Motor Parts | NM4222 | FVP | 2005-2008 VOLKSWAGEN:
JETTA |
| Any Part-Rama Auto | NM4222 | Quality- Built | 2005-2008 VOLKSWAGEN: JETTA |
| MOOG LOUISVILLE WAREHOUSE |
NM4222 | Quality- Built | 2005-2008 VOLKSWAGEN: JETTA |
| PISTON RING SERVICE SUPPLY |
NM4222 |
Talon | 2005-2008 VOLKSWAGEN: JETTA |
| Customer | Part | Brand | Vehicle Applications |
| AUTOZONE | NM55381 | Duralast | 2005-2019 SEAT: ALTEA;
LEON / VOLKSWAGEN |
| PISTON RING SERVICE SUPPLY | NM55381 | Talon | 2005-2019 SEAT: ALTEA; LEON / VOLKSWAGEN: BEETLE; BORA; JETTA |
| WM AUTOMOTIVE WAREHOUSE | NM55381 | Quality- Built | 2005-2019 SEAT: ALTEA;
LEON / VOLKSWAGEN |
2) Describe the cause (this adds a picture to the description included in the report):
Based upon the information received from the component part manufacturer Yusin:
WHY1: Crimping machine did not put enough pressure on casting to secure seal properly.
WHY2: Process operator reversed the crimping fixture which caused the tool to limit the crimping angle and pressure.
WHY3: The SOP was not followed correctly and controls were not adjusted to include two seconds of applied pressure.
WHY4: The sum of tolerances between the casting and plastic seal, plus the lack of controls to lock the plastic seal during assembly can lead to improper crimping, allowing the seal to move.
WHY5: The master cylinder design does not consider an error proofing solution to secure the seal regardless of assembly and operator mistakes.
| When? | What ? | What do we do about it? |
| Wednesday, June 17, 2020 | Mark Friedberg [mailto:mark@bourneusa.com] sent an email to MPA Quality about nonconforming product shipped to MPA (no safety issue mentioned). | MPA Sr. QE, responded by asking for bracket or lot numbers and if this was a safety concern.
Containment started: Request to MPA subsidiaries (MPA, MPM2) & parts in transit to quality control hold (QCH). |
| Wednesday, June 17, 2020 | Mark Friedberg sent an email (below) to MPA Sr. QE Raul Viramontes:
Hi Raul, based on what weโve seen, if there is a problem it appears to be found during bleeding/initial installation of the assembly. Yusin is investigating and will send a corrective action. What is the warranty rate for MPA?” | MPA Sr. QE Raul Viramontes, responded with warranty charts and requested a conference call June 19. |
| Thursday, June 18, 2020 | Mark Friedberg replied – If you want to have a call we can but not sure what I can add to a conversation tomorrow.
We donโt have the corrective action form from Yusin. | MPA Sr. QE responded on June 22, fill out the CAR form latest June 26 to set up a meeting and go over the root causes and preventive/corrective actions. |
| Monday, June 22, 2020 | Mark Friedberg replied – We wonโt have a corrective action completed by Friday June 26. Thursday and Friday this week are a holiday in China.
Yusin has identified the issue and is working towards what will be a corrective action. Yusin purchased new equipment to assemble this master that was delivered to the factory last week and is being set up now. Complete testing results and a final corrective action could be available later next week. | On June 26 MPA Buyer, requested available date to review the corrective action. |
| Monday, June 29, 2020 | Mark Friedberg sent supplier corrective action form to MPA. | MPA involved Executive VPA Supply Chain to set up a conference call with Yusin. Elevated to VP Engineering. Requested confirmation and root cause; scheduled emergency conference call with Yusin. |
| Wednesday, July 1, 2020 | Conference call with Yusin.
Supplier explained issue, root cause and his point of view of the failure mode as well as provided suspect defective date code. Supplier disagreed with this being a safety issue. | MPA Investigation started: July 1, requested samples from MPM2 for corporate testing.
July 6, samples arrived to Torrance from MPM2. July 7, pull test started. |
| Wednesday, July 8, 2020 | Reviewed pull test results on meeting. | MPA Sr. QE Raul Viramontes, sent out results and our engineering department recommended a
Durability Test. |
| Thursday, July 9, 2020 | Durability test started. | Monitored part. |
| Friday July 10, 2020 | Communication with supplier about date code relation with MPA date code. | Review if MPA had any in house, we did not. |
| Monday , July 13, 2020 | Durability test completed. | Durability Report sent out, July 14. |
| Wednesday, July 15, 2020 | Meeting to review durability report. | Technical meeting to review results took place and decided to elevate the issue to Executive Management.
Scheduled executive meeting on July 16. |
| Thursday, July 16, 2020 | Elevation of the issue to Executive Management. | Decision to report to NHTSA. |
| Friday, July 17, 2020 | Report sent to NHTSA |
4) Describe what distinguishes the remedy component from the recalled component. (adds chart and picture to description)
Master cylinder was re-designed by manufacturer Yusin to include a C-clip which will secure the seal. MPA has validated C-clip redesign made by manufacturer Yusinโs with push (destructive) and durability test.
| Recalled part number (Superseded by C-clip) | Remedy part number with C-clip design | |
| Yusin | V0300-1(AH) | V0820(AH) |
|
Equivalent to MPA | NM4222 | NM4333 |
| NM55381 | NM55677 |
MPA Durability test simulates the vehicle braking system. The tester consists of 4 wheel cylinders and an electric actuator that cycles the master cylinder. The unit was bench bled and filled with dot 3 brake fluid and cycled every 3-5 seconds to reach a pressure of 600-1500 psi. Every hour a pressure hold test was performed to ensure there was no pressure loss. The unit ran for 70 hours (49,426 cycles) with no signs of pressure loss or visible leaks. The test was resumed for further testing and stopped at 424 Hours (299,503 cycles) with no signs of pressure loss or leaks. Once removed from the tester the unit showed no signs of fluid leaks or movement of the seal retainer and C-clip. To measure the strength of the C-clip retention destructive testing was also performed. The unit was cut at the neck of the mounting flange and a force was applied to the primary piston in the direction of the retainer. This simulates the force direction the internal springs would apply on the C-clip when the unit is fully assembled. A force of 2023 lbs. was applied causing the piston to break through the plastic seal retainer. The aluminum casting did not fracture and the c clip showed no signs of movement from its initial positon. This was well above the OEM unit tested, which had the casting fracture at 1600 lbs. From this, we can conclude that the improved design with the addition of the C-clip retainer will not have any of the seal retention failures the previous design had and that the design meets and exceeds OEM seal retainer retention specifications.
July 31, 2020
Dear ,
We write this letter to inform you that Motorcar Parts of America, Inc. has decided to deploy a voluntary recall of Master Cylinder Part Number NM4222.
Please quarantine this unit, if you still have it in stock. Please confirm back to Gary DelGreco, if you have that still in stock. We show that you have purchased one (1) of this unit and have not had any core or warranty returns,
To date, there have been no incidents reported relating to the Part Number listed above. We are initiating this voluntary recall, out of an abundance of caution, due to a report from our supplier.
We apologize for any inconvenience this may cause you or your customers. We will work diligently to alleviate any issues related to this voluntary recall.
Thank you for your time and consideration, please contact me at rmochulsky@motorcarparts.com, or contact Gary DelGreco at gdelgreco@motorcarparts.com, with any comments or concerns.
Best Regards,
Rick Mochulsky
Rick Mochulsky
SVP, Sales and Marketing
2929 California Street โ Torrance, CA. 90503 โ Tel (310) 212-7910 โ Fax (310) 212-7581
1 Affected Product
Equipment
| BRAND | PART NO. | PRODUCTION DATES |
| DURALAST | MASTER CYLINDER | |
9 Associated Documents
Chronology
RMISC-20E057-0186.pdf 299.654KB
Loading...
Reload document 
Open in new tab
Recall Quarterly Report #4, 2021-2
RCLQRT-20E057-2399.PDF 211.434KB
Loading...
Defect Notice 573 Report
RCLRPT-20E057-3749.PDF 217.394KB
Loading...
Manufacturer Notices(to Dealers,etc)
Loading...
Recall Quarterly Report #3, 2021-1
RCLQRT-20E057-6331.PDF 211.326KB
Loading...
Recall Quarterly Report #2, 2020-4
RCLQRT-20E057-8832.pdf 210.957KB
Loading...
Recall Quarterly Report #1, 2020-3
RCLQRT-20E057-1806.PDF 211.147KB
Loading...
Recall Quarterly Report #5, 2021-3
RCLQRT-20E057-9682.PDF 211.546KB
Loading...
Recall Quarterly Report #6, 2021-4
RCLQRT-20E057-6101.PDF 211.639KB
Loading...
Latest Recalls Documents
- ใFit for Disc Brakeใ The brake caliper press tool is equipped with two groups of push boards: 7.01x2.36 inches and 4.53x2.17 inches, Suitable for most single and twin pistons floating calipers, twin and quad pistons fixed calipers or some sextuplet pistons fixed calipers (Just make sure the piston calipers space can accommodate the spreader)
- ใWorking PrincipleใThe spreader can spreading to push the boards or retracting when finished it. (Ajust by the switch). In expanded mode, the centrally located ratchet screw creates uniform thrust to the push boards that can quickly push several pistons in the caliper at the same time. Effectively save energy and greatly improve efficiency.
- ใHow to useใMake the push boards both sides Centralized Alignment the pistons, let both sides of the push boards be forced at the same time (press both sides to assist in starting until push boards press the pistons), swing the handle until the push boards press the pistons to the suitable position, last, ajust the switch, retract the boards to remove the spreader.
- ใSize ReferenceใTwo groups of push boards size: 7.01x2.36 inches and 4.53x2.17 inches; Telescopic range: fully retracted: 1.88โ, fully expanded: 3.03โ.
- Six - Months Customer Service for Five Bananas Brake Caliper Tool. Pls email us first when you have any problem, we promise will provide the best solutions.
- ใExcellent Designใ: The brake caliper tool is made of high-quality carbon steel, which has been heat-treated, has high hardness, is not easy to deform, and is corrosion-resistant. Pushing the caliper piston back can leave enough space to replace the new brake pads. The handle is made of non-slip rubber, which is comfortable to hold and has uniform force.
- ใWide Applicationใ: FITHOIST brake caliper compression tool has 2 sets spreading plates,1.57ร2.76" and 1.57ร2.95".the bigger ones more fit for some sextuplet pistons fixed calipers, smaller ones are suitable for disc brake system with dual and quad pistons fixed calipers, or single and dual pistons floating calipers.The 2 larger push plates can be quickly mounted to the ratchet mechanism using magnets and grooves.This item is for disc barke, not for drum brake.
- ใ360ยฐRotating Ratchetใ๏ผThe break caliper compression tool features a 360-degree ratchet design that makes it easy to push the piston in from any direction, allowing you to hold the spreader plate in place while you flick the handle back and forth to expand or compress, and prevent damage to your car's brake components.And your hands won't get tired from squeezing.
- ใEasy to Useใ:You can adjust the distance between the two steel plates by swinging the handle, and achieve positive and negative adjustment by flipping the reversing switch in the ratchet. Both steel plates require pressure to start the ratchet. When using, squeeze them and swing them several times until they fit the size of the caliper, and then continue to swing,until it can be taken out of the caliper compression tool.
- ใWonderful Toolsใ:The brake piston compressor tool comes with 2 brake caliper hangers for hanging the caliper tool, brake hose and other parts, making it easy to check other car parts during brake repair. This tool is suitable for various cars, trucks and some commercial vehicles, perfect for replacing brakes at home and in the garage. And it is also a perfect choice as a gift for your husband or parents.If you have any questions, please feel free to contact us and FITHOIST will provide you with the best service:)
- Ideal for 4 wheel drive cars/trucks
- Includes left and right handed thrust bolt assemblies
- The kit includes 18 adapters which fit a variety of modern car brands
- 24Pc kits rotates piston back into caliper for fitting of new brake shoes and pads
- Storage case and a pair of gloves included.
- COMPLETE BRAKE CALIPER TOOL SET: This Orion Motor Tech 24-piece brake caliper tool set includes 2 retaining plates, left and right thrust bolt assemblies, 18 disc adapters, 2 brake hangers, a carry case, and a pair of gloves
- EASY OPERATION: Attach the plate to the handle, select the disc adapter that fits & rotate the pistons back into their calipers to clear your pads; embedded magnets in each thrust bolt assembly easily hold your drive keys & adapters in place during use
- UNIVERSAL COMPATIBILITY: This disc brake caliper tool set includes a large array of adapters to fit most vehicles, including hundreds of American, Japanese, and European models; see below for a full list of compatible models
- DURABLE BUILD: The sandblasted #45 carbon steel construction of our tool set ensures long lasting performance and corrosion resistance even after years of punishing use
- CUSTOM CASE INCLUDED: The heavy-duty blow molded case ensures your tools are securely housed, making it simple to carry them wherever you need to go while keeping everything in place
- Works on twin and quad piston fixed calipers, as well as single and twin piston floating calipers
- Centrally located ratchet evenly spreads force in a parallel manner to prevent misalignment of pistons
- Ratchet technology gives a full 360 degree swing so that the spreader may be placed at any position
- Extended reversing lever allows for easy change from spreading to retracting
- Made in the USA
- Easy Brake Pad Replacements: This brake compressor tool from Orion Motor Tech lets you quickly and efficiently retract single or dual brake piston, speeding up your brake pad replacement and getting you back on the road faster
- Wide Compatibility: This brake caliper tool works with single piston on ATVs, UTVs, and SUVs and dual piston on both front and rear calipers of most cars and trucksโmaking it the go-to choice for a wide range of vehicles
- Effortless Power: With a powerful compression ratio, this caliper tool delivers at least 377 lb. of force with an easy press. Simply squeeze the handle to get maximum power with minimal effort, making brake maintenance a breeze
- Easy Organization: The custom-molded EPE foam keeps your brake caliper compressor neatly organized and safe from damage during storage or transport, so it's always ready for the next job
- Built to Last: Crafted from high-quality aluminum alloy and steel with corrosion-resistant finishes, this brake caliper spreader tool is built to withstand repeated use in tough conditions, ensuring years of reliable service
- ใHigh Qualityใ: Made of 45# steel, long service life, high hardness, not easy to deformation. It has been wrought by fine work and is more resistant to impact and wear than ordinary steel. If you want to change your brake pads, this is a must.
- ใEasy to Operateใ: The retracting tool for the rear brake pads of the car is easy to use, and the retracting piston is available on the left and right screw piston calipers, so you can operate it easily. It made things quick, easy and painless.
- ใSizeใ: Screw size is 5.4*3.7in, top piece size is 3.5*1.8in, please confirm the size before purchase. If you just started using it, it's a bit time consuming, please don't rush it.
- ใPractical and Efficientใ: Brake caliper piston winding tool, used to install brake pads of domestic and imported cars and trucks with return air piston calipers.
- ใApplicableใ: This handle set brake caliper winding tool is ideal for removing or installing press fittings such as ball joints, universal joints, automotive brake fixing pins, etc.
- EASY-TO-USE DESIGN: Simplify brake pad and shoe replacement by rotating pistons back into the caliper on cars, trucks, or 4-wheel drive disc brake vehicles with this tool set, featuring both right-handed and left-handed thrust bolt assemblies for versatile operation.
- UNIVERSAL COMPATIBILITY: Our 22-piece brake caliper press tool kit includes 18 adapters to accommodate hundreds of vehicle makes and models, such as American, European, and Japanese vehicles, offering comprehensive coverage for various applications.
- HEAVY-DUTY CONSTRUCTION: The disc brake caliper tool set is crafted from carbon steel with a rust-proof blasted finish, this durable tool set is designed to withstand heavy use and accidental drops, making it ideal for DIY novices and professional mechanics alike.
- ORGANIZED STORAGE SOLUTION: The brake caliper press tool kit comes with a sturdy ABS carrying case featuring pre-sized slots for each component, including right and left-handed thrust bolts, two retaining plates, and 18 disc adapters, ensuring easy organization and transport.
- PROFESSIONAL SUPPORT: To guarantee outstanding quality and user experience, each brake caliper tool set includes a detailed user manual with an illustrated parts diagram and access to professional technical support when needed.
- ใWide applicationใTUTOOLS brake caliper piston Saves time and much easier to use than most other ratchet caliper tool.Professional brake caliper piston press tool, ideal for most vehicles and trucks on the road.This tool is for brake tools and brake cylinder adjustment group,and you will need more than 1.5" of clearance between the caliper edge and the piston in order to fit this thing in there.In use, you can you can use a trustworthy C-clamp as an auxiliary tool.
- ใPremium materialใTUTOOLS car ratchet brake piston is equip with extra 2pcs steel plates (4-5/8L x 2-3/8H)perfect fit for Single, Twin or Quad Piston Calipers.
- ใUsage MethodsใMake the spreading plates both sides Centralized Alignment the pistons. Due to ratcheting structure, two spreading plates need pressure to start the ratchet. Let both sides of the spreading plates be forced at the same time, please squeeze them for the first few swings until the suitable position to` insert into the caliper. Finally adjust the switch, go ahead to swing. Please make sure to spread the force on the caliper piston evenly, in case of caliper damage or pistons dislocation.
- ใWarm TipsใWithout pressure pushing inward on the spreaders, you will not be able to ratchet the tool in or out. If the tool is set smaller than the space between the piston and caliper edge, you will need to push against the spreader until it touches the metal of the caliper.
- ใExcellent ServiceใWe TUTOOLS Team provide 24 months customer service and 30 days money back for all TUTOOLS products ,if you do not satisfied with our item, we can provide you best solutions to satisfy you.
- ใCompatible withใ: The brake caliper tool compresses single/twin/quad/sextuplet brake pistons simultaneously, works well on most cars and light trucks brake calipers.(PS:We are suitable for disc brake, not for drum brake, please confirm before Purchsing).
- ใTake No Time at Allใ: Squeeze the compression tool handle until the plunger contacts the inboard brake pad, continue squeezing to compress both pistons. Makes brake piston pad replacement a simple job.
- ใEffortless to Useใ: Compared with the knob handle and swing handle, the squeezing handle can easily adjust and reduce the hand pressure and fatigue during the use process.
- ใLasting and Reliableใ: Caliper compressor is made of high quality metal material for strength, durability and resistance to corrosion, ensuring performance for long-term repetitive work.
- ใHighly Recommendedใ: No matter if you are a beginner or a pro, the spreader allows you to change brakes quickly and easily. If you are a professional mechanic / amateur racer / auto technician / track junkies, then this brake caliper tool will surprise and satisfy you more than others.
-audioemdtc-20&keywords=brake%20caliper%20tool" title="Buy on Amazon" target="_blank" rel="nofollow noopener sponsored">Buy on Amazon
Price incl. tax, excl. shipping
Last update on 2025-04-17 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.