MINI COOPER 11127601535 Cylinder Head 306-50657 02/12

( Brand: Mini Cooper ), ( Manufacturer Part Number: 11127601535 ), ( Part Type: Cylinder Head ), ( Conditions Options: Cylinder Head, Off And Ready To Go ), ( Genuine Oem: Yes ), ( Ipn: 306-50657 ), ( Make: Mini )

Review MINI COOPER Cylinder Heads Model Thru 02/12 fits CLUBMAN 2011–2012

The **Mini Cooper 11127601535 1.6L 16-Valve Cylinder Head (02/2011 11/2012 Clubman S, 1199855 engine code)** is a precision-engineered component designed to deliver optimal performance, reliability, and efficiency for the iconic 1.6L R56/R57 Mini Cooper platform. Crafted from high-quality cast aluminum alloy, this cylinder head features a robust and lightweight construction, ensuring superior heat dissipation while maintaining structural integrity under high-stress conditions. The head is equipped with **four intake and four exhaust valves per cylinder**, operated by a **double overhead camshaft (DOHC) system** with hydraulic valve lifters, allowing for smooth, precise valve actuation and minimizing wear over time. The **1199855 engine code** commonly found in the **Clubman S (2011 2012)** requires this specific cylinder head to achieve its intended power output, typically around **132 143 horsepower**, depending on tuning and calibration.

This cylinder head incorporates **individual throttle bodies (ITBs)** for each cylinder, enabling precise fuel-air mixture control and enhancing throttle response, a hallmark of the Mini Cooper s sporty driving dynamics. The **port design** is meticulously contoured to optimize airflow, reducing turbulence and improving combustion efficiency, which translates to better fuel economy and reduced emissions. The **spark plug bores** are precisely machined to accommodate standard **NGK or Bosch plugs**, ensuring reliable ignition and consistent performance. Additionally, the head includes **integrated oil passages** for lubricating the camshafts and valve train, while the **valve cover** features a sleek, functional design that aligns with the Mini s signature aesthetic.

For performance enthusiasts, this cylinder head is a **direct-fit replacement** for stock applications, making it ideal for restorations, upgrades, or repairs where original components are unavailable or damaged. It is fully compatible with the **02/2011 11/2012 Clubman S** model range, including both **petrol direct-injection (FSI) and port-injection variants**, though compatibility should always be verified with the engine code and vehicle specifications. The head is **factory-sealed** with gaskets and a **new OEM-style head gasket**, ensuring a proper seal when installed, while the **bolt pattern and torque specifications** adhere strictly to Mini Cooper s engineering standards to prevent warping or leaks. Whether used in a daily driver, a track-focused modification, or a classic restoration project, this cylinder head delivers the reliability and performance expected from the legendary Mini Cooper platform.

### Pros and Cons of Buying a Mini Cooper 11127601535 Cylinder Head (1.6L 1199855 Head, 2002-2012 Clubman)

1. **Common and Widely Available** The 1.6L engine (R56/R57) is one of the most popular Mini engines, meaning parts like cylinder heads are easy to find. Aftermarket support is strong, with options for upgrades like porting, polishing, or even full rebuilds.

2. **Proven Reliability (When Maintained)** The 1199855 head is a robust design, especially when paired with a well-maintained engine. Many owners report longevity if oil changes, timing belt, and water pump intervals are followed.

3. **Performance Potential** The stock head can be upgraded with aftermarket parts (e.g., higher-flow intake/exhaust valves, stronger springs, or a turbo kit for forced induction) to significantly improve power. Stock heads can reliably handle ** 200-250whp** with proper modifications.

4. **Cost-Effective Replacement Option** Compared to some other high-performance engines, the cost of a used or rebuilt head is relatively low, especially if sourced from a reputable dealer or rebuild shop.

- **Intake/Exhaust Upgrades** (e.g., K&N, Borla, or Magnaflow)

- **ECU Tuning** (e.g., MHD, JB4, or custom maps)

- **Turbocharging** (e.g., Garrett GTX or BorgWarner turbo kits)

- **Forced Induction** (e.g., supercharger setups like the MiniTurbo)

6. **Aftermarket Support** There are numerous guides, forums (e.g., MiniTurbo, MiniForum), and shops specializing in these heads, making repairs and upgrades more accessible.

7. **Resale Value (Stock or Modified)** Even modified Minis with these heads hold value well, especially in the classic/performance market, particularly if they re well-documented.

---

1. **Timing Chain & Water Pump Issues** The 1199855 head is paired with a timing chain system (not a belt), which can stretch or fail over time. The water pump is often integrated with the timing chain tensioner, so both must be replaced at ** 60,000 80,000 miles** (or as recommended by the manufacturer). Neglecting this can lead to catastrophic engine failure.

2. **Head Gasket Failures** While not as common as in older Minis, head gasket leaks can still occur, especially if the engine overheats or is modified aggressively. Proper cooling system maintenance is critical.

3. **Valvetrain Wear Under High Power** Stock valvetrain components (valves, springs, retainers) are not designed for extreme power levels. Running **>250whp** without upgrades (e.g., stronger springs, titanium valves) can lead to premature wear or failure.

4. **Oil Consumption (OC) Issues** Some 1.6L Minis, especially those with higher mileage, develop oil consumption problems due to worn piston rings or valve seals. This can be costly to fix if not addressed early.

5. **Turbocharged Reliability Concerns** If modifying for forced induction, the stock head may require reinforcement (e.g., head studs, gasket upgrades) to handle boost pressures. Poorly executed turbo builds can lead to head warping or failure.

6. **Depreciation (Stock Models)** While not as severe as some other cars, stock 1.6L Minis (especially older models) depreciate faster than high-performance variants. If you plan to keep it stock, resale value may not be as strong as a modified or classic model.

7. **Complexity of Modifications** While the head is forgiving, some upgrades (e.g., turbocharging, porting) require mechanical skill or professional help. DIY mistakes can void warranties or cause damage.

---

The **11127601535 cylinder head (1199855, 2002-2012 Clubman)** is a solid choice for both stock and modified Mini Cooper owners. It strikes a balance between reliability, performance potential, and availability. **If maintained properly** (timing chain/water pump, oil changes, cooling system checks), it can last well over 100,000 miles. For performance enthusiasts, it s one of the most **mod-friendly** Mini heads, capable of handling significant power with the right upgrades.

However, **neglecting maintenance** (especially the timing chain/water pump) or pushing power limits without proper reinforcement can lead to expensive failures. The biggest risks are **timing-related issues, head gasket leaks, and valvetrain wear under high loads**.

- **For Stock or Lightly Modified Owners:** Buy a **used or rebuilt head** from a trusted source (e.g., Mini specialists, eBay with verified sellers, or a reputable rebuild shop). Ensure the head is **free of cracks, warping, or internal damage**. Follow the **60K-mile timing chain/water pump interval** strictly.

- **For Performance Builds:** Invest in a **high-quality rebuilt head** (e.g., from a shop like **MiniTurbo, MiniMotorsport, or a local specialist**) and pair it with **valvetrain upgrades** (e.g., stronger springs, titanium valves) if aiming for **>200whp**. Consider **head stud reinforcement** if running forced induction.

- **Avoid:** Buying a head from an unknown source without inspection, skipping the timing chain/water pump service, or modifying without proper support components.

- **Stock or mildly tuned** (e.g., intake/exhaust, mild ECU tune) **Excellent choice**.

- **Turbocharged builds** (with proper reinforcement) **Great potential**.

- **Classic/Restoration projects** **Highly recommended** due to availability and community support.

**Final Verdict:** The 1199855 head is one of the **best Mini heads** for both reliability and mod potential, but **only if maintained and upgraded correctly**. For most owners, it s a **safe and rewarding** choice just don t cut corners on maintenance.

Details:

CLUBMAN 12s model, thru 02/12. Body parts are sold as is. CLUBMAN 11s model.

part #: 11127601535 prices

• $186.30-$1200.00

specifications cylinderheapar:

• for models: Clubman
• for years: 2011-2012
• brand: Mini Cooper
• mpn: 11127601535
• part type: Cylinder Head
• conditions options: Cylinder Head, Off And Ready To Go
• genuine oem: Yes
• ipn: 306-50657
• make: Mini

shipping cylinderheapar:

• class: Standard
• service: UPS Ground
• cost: $164.61
• carrier: UPS
• type: Calculated
• transit: 4-7 Days

returns cylinderheapar:

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

seller cylinderheapar:

• city: Taylor, Michigan
• rating: 95.6%
• # reviews: 1186

payments cylinderheapar:

• other
• credit card: Mastercard
• wallet: Paypal

offer cylinderheapar:

• availability: In Stock
• options: Ship-to-home
• started: February 21, 2026
• sold: 0
• quantity: 1

general cylinderheapar:

• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

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