BMW 11121461409 Upper Spark Plug Cover

( Manufacturer Part Number: 11121461409 ), ( Type: Spark Plug Cover ), ( Country Of Origin: Germany ), ( Color: Dark Grey ), ( Manufacturer Warranty: Unspecified Length ), ( Placement On Vehicle: Upper ), ( Storage Location: H.2.c.2 Zd79630-x ), ( Custom1: 239855 ), ( Material: Plastic ), ( Machine Type: Street Motorcycle ), ( Vintage Part: No )

Review BMW K120 Upper Spark Plug Cover fits K1200LT 1999–2004

The **BMW 11121461409 Upper Spark Plug Cover** for the **2000 2004 K1200LT** motorcycle is a precision-engineered component designed to ensure optimal performance, reliability, and longevity for the bike s high-performance twin-cylinder engine. Crafted from high-grade aluminum alloy, this cover is meticulously machined to fit seamlessly over the spark plug wells, providing a secure, airtight seal that prevents moisture, dirt, and debris from infiltrating the engine bay. Its sleek, aerodynamic design not only enhances the motorcycle s aesthetic appeal but also contributes to improved airflow and reduced drag, allowing the engine to operate at peak efficiency. The cover features a precise, threaded interface that aligns perfectly with the cylinder head, ensuring a snug fit that resists vibration and prevents leaks, which are critical for maintaining consistent ignition performance and fuel efficiency. Built to withstand the demanding conditions of long-distance touring and high-speed riding, this part is a direct replacement for the original equipment (OEM) component, guaranteeing compatibility with the K1200LT s 1,202cc air-cooled inline twin engine. Whether you're restoring a classic bike, upgrading an existing setup, or performing routine maintenance, this upper spark plug cover is an essential component that contributes to the reliability and performance of one of BMW s most iconic adventure motorcycles. Its durable construction and exacting tolerances make it a trusted choice for both enthusiasts and professional mechanics seeking long-term durability and hassle-free operation.

### **Pros and Cons of Buying a BMW 11121461409 (K1200LT Upper Spark Plug Cover) for a 1999 2004 Model**

1. **Direct Fitment** This part is specifically designed for BMW K1200LT models from 1999 to 2004, ensuring compatibility without modifications.

2. **Improved Reliability** A new or high-quality replacement part reduces the risk of electrical shorts, misfires, or ignition system failures.

3. **Enhanced Performance** A properly sealed spark plug cover helps maintain consistent ignition timing, which can improve engine efficiency and power output.

4. **Prevents Moisture Damage** The original part may degrade over time, allowing moisture to enter the ignition system, leading to corrosion or poor spark generation. A replacement mitigates this risk.

5. **Easier Maintenance** If the original part is cracked or damaged, replacing it simplifies future spark plug servicing.

6. **Compatibility with Aftermarket Upgrades** If you plan to modify your bike (e.g., high-performance ignition coils or custom wiring), a new plug cover ensures a clean, professional installation.

7. **Prevents Fire Hazards** A failing or damaged plug cover could pose a fire risk if ignition wires come into contact with hot surfaces or fuel vapors.

1. **Cost** Depending on the brand and quality, this part may be more expensive than a generic or aftermarket alternative, though BMW OEM parts are typically reliable.

2. **Installation Complexity** While not overly difficult, removing the old cover may require some disassembly (e.g., removing the seat, fuel tank, or ignition components), which could be time-consuming for inexperienced riders.

3. **Potential Counterfeit Parts** If purchasing from an untrusted seller (e.g., eBay, Amazon, or unverified online marketplaces), there s a risk of receiving a low-quality or fake part. Always buy from reputable dealers or BMW-approved suppliers.

4. **Warranty Considerations** If your bike is under warranty, replacing OEM parts with aftermarket components may void certain coverage, depending on the manufacturer s policies.

5. **Limited Longevity of Other Components** If other parts of the ignition system (e.g., coils, wires, or the ECU) are worn out, replacing just the plug cover may not fully resolve electrical issues.

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### **Conclusion**

The **BMW 11121461409 upper spark plug cover** is a **practical and worthwhile replacement** for 1999 2004 K1200LT owners experiencing electrical issues, moisture ingress, or general wear. The benefits such as improved reliability, better performance, and prevention of long-term damage outweigh the minor drawbacks (cost, installation effort, and potential counterfeit risks) for most riders.

If your bike is showing signs of ignition problems (e.g., rough idling, misfires, or difficulty starting), replacing this part is a **proactive and cost-effective solution** to avoid more serious (and expensive) repairs down the line.

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### **Recommendation**

1. **Source the Part from a Trusted Supplier** Purchase from an **official BMW dealer, a reputable aftermarket parts retailer (e.g., Dynacraft, BMW Motorrad Parts, or local BMW specialists), or a verified online marketplace** (e.g., RockAuto, eBay with seller feedback, or BMW forums).

2. **Verify Compatibility** Double-check that the part number (11121461409) matches your exact model year and engine configuration (K1200LT).

3. **Consider a High-Quality Alternative** If the OEM part is unavailable or too expensive, look for **aftermarket options from brands like Dynacraft, BMW Motorrad, or OEM-equivalent suppliers**, which often provide similar reliability at a lower cost.

4. **DIY or Professional Installation?**

- If you re comfortable with basic motorcycle maintenance, installing it yourself is feasible (requires removing the seat, fuel tank, and ignition components).

- If unsure, have a **BMW motorcycle mechanic** perform the replacement to ensure proper sealing and wiring.

5. **Inspect Related Components** While replacing the plug cover, take the opportunity to check the **ignition coils, spark plug wires, and connections** for wear or damage. Replace any degraded parts to prevent future issues.

6. **Budget for Additional Costs** Account for potential extra expenses like **tools (e.g., torque wrench, ignition wire puller), gaskets, or cleaning solvents** if needed during installation.

**Final Verdict:** **Worth the investment** for long-term reliability and performance. Prioritize quality and proper installation to maximize its benefits.

Details:

Fits 1997 2009 BMW K120, K1200RS, and K1200GT model's. Look for the Make Offer button on listing page. One-Of-A-Kind When Its Gone, Gone 99-04 BMW K120 Upper Spark Plug Cover:: - Dark grey/black plastic cover with 'BMW 4VALVE' embossed. We review all reasonable offers promptly.

Part is off a Good Running 2003 BMW K120, with 3,430 Miles, Watch A Video From Sun Coast Cycle Sports. Item must be in original, uninstalled condition with no modifications. Do you combine shipping?, Yes. Do you accept offers?, Some listings offers.

Residential delivery with lift gate is available. Structurally sound, no cracks.: Are these genuine OEM parts?, Yes. We started with a single motorcycle dismantled in home garage.

Please verify the part number and compatible model's before purchasing. Every part is one-of-a-kind.

part #: 11121461409 prices

• $164.21-$184.57

specifications cyclesparkplugs:

• for models: K1200lt
• for makes: Bmw
• for years: 1999-2004
• mpn: 11121461409
• type: Spark Plug Cover
• country of origin: Germany
• color: Dark Grey
• manufacturer warranty: Unspecified Length
• placement on vehicle: Upper
• storage location: H.2.c.2 Zd79630-x
• custom1: 239855
• material: Plastic
• machine type: Street Motorcycle
• vintage part: No

payments cyclesparkplugs:

• other
• credit card: Mastercard
• wallet: Google-pay

seller cyclesparkplugs:

• rating: 99.4%
• city: Odessa, Florida
• # reviews: 228368

returns cyclesparkplugs:

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

offer cyclesparkplugs:

• quantity: 1
• options: Ship-to-home
• availability: In Stock
• started: May 8, 2026
• sold: 0

shipping cyclesparkplugs:

• class: Standard, Expedited, One-day
• carrier: FedEx, USPS
• type: Fixed
• transit: 4-8 Days
• cost: $0.00
• service: FedEx Ground / FedEx Home Delivery, USPS Priority Mail, FedEx 2Day, Overnight

general cyclesparkplugs:

• condition: Used
• Motorcycle Scooter Parts Accessories > Electrical Ignition Components > Spark Plugs

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