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- Dorman 42035 Brake Master Cylinder Reservoir ...
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Item #:
20504354
Dorman 42035 Brake Master Cylinder Reservoir Cap for Specific Models, Black Fits select: 1987-1990 CADILLAC DEVILLE, 1987-1990 BUICK LESABRE
Item #:
20504354
MMK 83169
Price Details
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*All items will import from US
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This brake master cylinder cap is designed to match the fit and function of the original cap on specified vehicles.
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What Stands Out
Perfect Fit
Engineered specifically for 1987-1990 Cadillac DeVille and Buick LeSabre, ensuring optimal compatibility and function in braking systems.
Durable Material
Constructed from high-quality materials, this brake master cylinder reservoir cap resists wear and tear, providing long-lasting performance and reliability for your vehicle.
Easy Installation
Designed for straightforward installation, this cap allows users to quickly replace their old or damaged component without professional assistance, saving time and effort.
Product Details
| Manufacturer part number | 42035 |
| Vehicle make | Buick, Cadillac |
| Vehicle model | Deville, Lesabre, Electra |
| Vehicle year | 1987, 1988, 1989, 1990 |
| Vehicle fitment type | Specific |
| Brake system replacement part & hardware type | Brake Master Cylinder Reservoir Cap |
| Vehicle mount location | Rear |
| Items included | 1 Master Cylinder Cap |
| Material | Plastic, Plastico |
| Brand | Dorman HELP |
| Features | Easy Installation |
| Automotive parts division | Direct Replacement |
| Vehicle type | Car |
| Compatible cars | 1987-1990 CADILLAC DEVILLE, 1987-1990 BUICK LESABRE |
| Has written warranty | No |
| Color | Black |
| Weight | 1.2 lb (540 grams) |
| Model | 42035 |
| Pieces | 1 |
Who Should Buy?
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Classic Car Owners
Ideal for owners of 1987-1990 Cadillac DeVille and Buick LeSabre needing a reliable reservoir cap replacement.
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DIY Mechanics
Perfect for those who enjoy maintaining their vehicles and require a durable, easy-to-install cap.
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Restoration Projects
Great for individuals restoring vintage cars, ensuring authenticity and functionality with this specific part.
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Modern Vehicles
Not suitable for newer car models outside the specified 1987-1990 range requiring different specifications.
Product Description
Dorman 42035 Brake Master Cylinder Reservoir Cap for Specific Models, Black Fits select: 1987-1990 CADILLAC DEVILLE, 1987-1990 BUICK LESABRE
About This Item
Introducing the Dorman - Help! - Carded 42035 Brake Master Cylinder Reservoir Cap Looking for a reliable replacement for your brake master cylinder cap? Look no further! The Dorman - Help! - Carded 42035 Brake Master Cylinder Reservoir Cap is designed to match the fit and function of the original cap on your vehicle. Restoring functionality, this cap is a trustworthy replacement for a missing or failed original part. Durable construction is a key feature of this cap. Made from high-quality materials, it ensures reliable performance and a long service life.
With a team of product experts backing its quality and over a century of automotive experience, you can trust that you're getting a top-notch product. To ensure the perfect fit for your specific vehicle, simply input your year, make, model, and configuration into the fitment tool provided on this page. This cap is compatible with the following vehicle model years: Buick Electra (1987-1990), Buick LeSabre (1987-1990), Cadillac DeVille (1987-1990), Cadillac Fleetwood (1987-1990), Oldsmobile 98 (1987-1990), Oldsmobile Delta 88 (1988-1990), and Pontiac Bonneville (1988-1990). The Dorman - Help! - Carded 42035 Brake Master Cylinder Reservoir Cap comes in a sleek black color to seamlessly blend with your vehicle's design. It is important to note that this product contains a California Proposition 65 warning for potential cancer and reproductive harm.
For more information, please visit www.P65Warnings.ca.gov. Don't settle for subpar brake components. Upgrade to the Dorman - Help! - Carded 42035 Brake Master Cylinder Reservoir Cap and enjoy peace of mind knowing you have a reliable and durable replacement part. Shop now and ensure the safety and functionality of your vehicle's braking system.
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Customer Questions & Answers
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Question:
What vehicles is this brake master cylinder cap compatible with?
Answer: It's compatible with specified models of Buick, Cadillac, Oldsmobile, and Pontiac from 1987 to 1990. -
Question:
How do I ensure the cap fits my vehicle?
Answer: Use the fitment tool on the product page to input your vehicle's year, make, model, and configuration. -
Question:
Is this part a quality replacement?
Answer: Yes, it is made from quality materials and is backed by a team of product experts for reliable performance.
Dorman HELP Brake Master Cylinder Reservoir Caps Editorial Review
The Dorman 42035 Brake Master Cylinder Reservoir Cap has received a mixed reception from customers. While some have praised its quality and noted that it fulfills its intended purpose when correctly matched to a suitable vehicle, others have encountered issues related to compatibility. Many reviews emphasize the importance of verifying the fit for specific models, as several customers report that the cap did not match their vehicle specifications even though they believed they had selected the correct item. This discrepancy highlights the need for potential buyers to diligently check their vehicle's details against the product information before purchasing. Overall, the Dorman 42035 cap seems to be a reliable replacement for those with compatible models, but its usability appears to be significantly affected by fitment issues for others. **
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Pros
- Quality Construction noted by some users.
- Effective when matched correctly to the vehicle model.
Cons
- Incorrect size for various car models, including 2008 Hyundai Elantra.
Platform Trust & Buyer Confidence
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Mohammad
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
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23 July 2026 · via Trustpilot
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- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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MMK 83169
Order now and get it around Friday, August 14
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Features & Benefits
- Direct replacement for original parts ensures perfect fit.
- Restores functionality for vehicles with fatigue or missing parts.
- Durable construction guarantees reliable performance.
- Backed by over a century of automotive experience.
- Easy to ensure correct fit using the convenient fitment tool.
- Trusted by professionals and DIY enthusiasts across North America.
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