MINI COOPER 17135A1BD89 Coolant Reservoir Tank Cap Cover Lid Minicoope 671.CO1C12 R57 R56

( Brand: Mini Cooper ), ( Manufacturer Part Number: 17135A1BD89 ), ( Model: MINICOOPE ), ( Part Type: Cover Lid Tank Cap ), ( Conditions Options: Coolant Tank Cap ), ( Genuine Oem: Yes ), ( Ipn: 671.co1c12 ), ( Make: Mini ), ( Descriptionpartcondition: Normal Wear Tear, Pls See Full Description For Detailed Info Ab ), ( Oe/oem Part Number: 17135a1bd89, 17117639024, 17132754264 )

Review MINI COOPER R56 Coolant Reservoir Tank Cap Cover Lid fits R55 2012

The **2012 Mini Cooper (R57, R56, R55) Coolant Reservoir Tank Cap Cover Lid (Part #17135A1BD89)** is a precision-engineered component designed to maintain the integrity and efficiency of your vehicle s cooling system. Crafted from high-quality, heat-resistant plastic, this cap cover lid is engineered to withstand the thermal stresses of high-performance engines while ensuring a secure, leak-proof seal. Its sleek, aerodynamic design not only enhances the aesthetic appeal of the coolant reservoir but also integrates seamlessly with the underhood layout of your Mini Cooper, contributing to a clean and organized appearance. The lid features a robust, snap-fit mechanism that guarantees a tight closure, preventing coolant loss and minimizing the risk of overheating critical for maintaining optimal engine performance, especially during spirited driving or extended use. Additionally, the cap includes a pressure relief valve, which helps regulate internal pressure within the cooling system, reducing the likelihood of coolant leaks or system damage caused by excessive pressure buildup. Whether you're restoring a classic Mini Cooper or performing routine maintenance, this replacement part ensures reliability and compatibility with the 2012 model year, aligning perfectly with the brand s reputation for precision and performance.

### Pros and Cons of Buying a 2012 Mini Cooper (R57/R56/R55) Coolant Reservoir Tank Cap Cover Lid (Part #17135A1BD89)

1. **Direct Fitment** This part is designed specifically for the 2012 Mini Cooper models (R57, R56, R55), ensuring compatibility without modifications. It will fit seamlessly into your vehicle s cooling system, maintaining proper function and aesthetics.

2. **Quality and Durability** Mini Cooper parts, especially those from authorized or reputable aftermarket suppliers, are built to meet the manufacturer s standards. A high-quality cap cover lid will resist leaks, corrosion, and wear, extending the lifespan of your cooling system.

3. **Prevents Coolant Evaporation and Contamination** The cap cover lid helps maintain proper pressure in the cooling system, reducing coolant loss due to evaporation. It also prevents debris, insects, or contaminants from entering the reservoir, which could clog or damage the cooling system over time.

4. **Aesthetic Improvement** If the original cap cover lid was damaged or missing, replacing it restores the vehicle s appearance. A clean, intact lid contributes to the Mini s sporty and refined look, especially in models like the R57 (Countryman) or R56 (Clubman).

5. **Easy Installation** Replacing the cap cover lid is a straightforward DIY task that typically requires minimal tools (usually just a screwdriver or wrench). No special skills or equipment are needed, making it a cost-effective maintenance job.

6. **Prevents Long-Term Damage** A failing or missing cap cover lid can lead to coolant leaks, overheating, or even engine damage if ignored. Replacing it proactively avoids costly repairs down the line.

7. **Compatibility with Aftermarket Coolants** If you use synthetic or high-performance coolants, a proper cap cover lid ensures the system operates at optimal pressure, enhancing the effectiveness of the coolant.

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1. **Potential Counterfeit Parts** If purchasing from an untrusted seller (e.g., unverified online marketplaces or unknown eBay sellers), there s a risk of receiving a counterfeit or low-quality part. Always buy from reputable suppliers (Mini dealerships, authorized aftermarket brands, or well-reviewed online retailers).

2. **Mismatched Materials or Finishes** Some aftermarket parts may not match the original Mini s material quality (e.g., plastic vs. metal, matte vs. glossy finish). While this is mostly cosmetic, it could affect durability or appearance.

3. **Minor Installation Challenges** In rare cases, the reservoir tank or surrounding area might have debris or corrosion that requires cleaning before installation. If the original lid was stripped or damaged, the new one might not fit perfectly without some effort.

4. **Price Variability** Prices can fluctuate based on the seller, brand, and whether the part is new or refurbished. While generally affordable, budget-conscious buyers might find slightly cheaper alternatives that compromise on quality.

5. **Limited Lifespan of the Part Itself** While the cap cover lid is durable, it is not a "forever" part. Over time, UV exposure, heat, or physical stress can cause it to crack or degrade. However, this is true of most plastic or rubber components in a vehicle.

6. **No Functional Upgrade** Unlike some performance parts, this cap cover lid does not improve cooling efficiency or engine performance. It is purely a maintenance and aesthetic replacement.

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The **2012 Mini Cooper coolant reservoir tank cap cover lid (17135A1BD89)** is a **practical and necessary replacement part** for maintaining your vehicle s cooling system and appearance. The benefits direct fitment, durability, leak prevention, and ease of installation far outweigh the minor drawbacks, which are mostly related to sourcing quality parts and minor installation considerations.

If your current lid is cracked, missing, or damaged, replacing it is a **smart preventive measure** that avoids more serious issues like coolant leaks or overheating. The part is **affordable, widely available, and easy to install**, making it a low-risk, high-reward upgrade.

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1. **Purchase from a Trusted Source** Buy the part from an **authorized Mini dealer, reputable aftermarket brand (e.g., Genuine Mini parts, Mann Filter, or Bosch), or a well-reviewed online retailer** (Amazon, RockAuto, or Mini-specific forums). Avoid unknown sellers to ensure authenticity and quality.

2. **Check for Compatibility** Verify that the part number **17135A1BD89** matches your specific Mini model (R57, R56, or R55) and year (2012). Some variants may have slight differences in design or fitment.

3. **Inspect the Cooling System** While replacing the lid, take the opportunity to **check for coolant leaks, corrosion in the reservoir, or clogs in the cooling system**. Top off or replace coolant if necessary.

4. **Follow Installation Guidelines** Ensure the new lid is **properly seated and tightened** to maintain system pressure. Refer to your Mini s service manual or a YouTube tutorial if unsure.

5. **Consider a Full Cooling System Service** If your Mini is older or has been neglected, replacing the cap cover lid is a good start, but consider **flushing the coolant and inspecting hoses, belts, and the radiator** for signs of wear.

6. **Store the Original Lid** If the old lid is still functional, keep it as a spare in case of future damage.

**Final Verdict:** **Buy the part if your current lid is failing.** It s a **simple, cost-effective fix** that protects your engine and keeps your Mini looking sharp. Prioritize quality over price to avoid future issues.

Details:

Number visible from outside, S0925Dummy-SALAPA, S0927All-season tyres, S0B23spice-orange metallic, SK9E1Imit.leather Leatherette /carbon-black. Left Side Driver / Right Passenger. Vehicle Options: Code: Option: S01CASelection of COP-relevant vehicles, S0205Automatic transmission, S0210Dynamic stability control, S0249Multifunction f steering wheel, S0258Tyres with reinflate properties, S02GCMINI LA wheel '6 Star Twin Spoke', S02VBTyre pressure display, S02XASport leather st. Coolant Tank Cap R57 R56 R55 Reservoir Cover Lid // MINI Part # 17135A1BD89.

Donor Vehicle information. FOR SALE - R57 R56 R55 Coolant Reservoir Tank Cap Cover Lid // MINI Part # 17135A1BD89.

part #: 17135a1bd89 prices

• $16.99-$43.11

specifications ocoosys:

• for models: R55
• for years: 2012
• brand: Mini Cooper
• mpn: 17135a1bd89
• model: Minicoope
• part type: Cover Lid Tank Cap
• conditions options: Coolant Tank Cap
• genuine oem: Yes
• ipn: 671.co1c12
• make: Mini
• descriptionpartcondition: Normal Wear Tear, Pls See Full Description For Detailed Info Ab
• oe/oem part number: 17135a1bd89, 17117639024, 17132754264

shipping ocoosys:

• service: Standard
• transit: 3-7 Days
• cost: $0.00
• type: Fixed
• class: Standard

general ocoosys:

• condition: Used
• Car Truck Parts Accessories > Engine Cooling Components > Radiators

returns ocoosys:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

offer ocoosys:

• started: March 31, 2026
• availability: In Stock
• options: Ship-to-home
• sold: 0
• quantity: 1

seller ocoosys:

• rating: 100.0%
• # reviews: 8126
• city: Perth Amboy, New Jersey

payments ocoosys:

• other
• credit card: Visa
• wallet: Apple-pay

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