BOSCH W145T35 Nos Spark Plug Nsu Zundapp Vw 14MM

( Brand: Bosch ), ( Manufacturer Part Number: W145T35 ), ( Type: Spark Plug ), ( Thread Diameter: 14 Mm ), ( Machine Type: Dual Sport Motorcycle, Off-road Motorcycle, Street Motorcycle ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review BOSCH Nos Vintage Spark Plug Mercedes Volvo Bmw Nsu Zundapp Vw 14mm

The **Bosch W145T35 NOS Spark Plug** is a premium, high-performance ignition component meticulously engineered to deliver exceptional reliability, efficiency, and longevity across a diverse range of automotive applications. Designed with a **14mm thread size**, this spark plug is specifically tailored for use in **Mercedes-Benz, Volvo, BMW, NSU, Z ndapp, and Volkswagen** engines, ensuring seamless compatibility with both modern and classic vehicles equipped with these powertrains. Crafted from **high-quality copper core alloy**, the W145T35 features a **fine wire electrode** that optimizes combustion efficiency, reducing fuel consumption while maximizing power output and torque. The **resistor-type construction** minimizes radio interference, making it ideal for vehicles with advanced electronics, while the **heat range of 35** strikes a precise balance between durability and performance ideal for engines operating under moderate to high thermal loads without risking pre-ignition or fouling.

The **NOS (New Old Stock) designation** signifies that this spark plug is sourced from a carefully curated inventory of pre-owned, high-quality components that have been thoroughly inspected, cleaned, and tested to meet Bosch s stringent quality standards. This ensures that buyers receive a plug with minimal wear, maintaining near-new performance characteristics while avoiding the potential inconsistencies of mass-produced, off-the-shelf replacements. The **iridium tip** on the center electrode enhances wear resistance, extending the plug s service life significantly compared to standard copper or platinum options, and its precise gap (typically **0.7 0.8 mm**) is optimized for peak ignition performance, reducing misfires and improving cold-start reliability. Whether installed in a **high-revving BMW M-series engine, a robust Mercedes diesel, or a classic Volkswagen Beetle**, the W145T35 delivers consistent, dependable spark generation, contributing to smoother operation, reduced emissions, and enhanced engine responsiveness.

For enthusiasts and mechanics alike, this spark plug represents a **cost-effective upgrade** over OEM parts, offering superior longevity and performance without compromising on fitment or compatibility. Its robust construction and Bosch s reputation for innovation make it a trusted choice for both restoration projects and high-mileage vehicles, ensuring that engines remain in peak condition for extended periods. Whether maintaining a **VW Golf GTI, a Volvo P1800, or a BMW 2002**, the W145T35 NOS Spark Plug stands as a testament to Bosch s commitment to precision engineering, delivering a blend of heritage reliability and modern efficiency in every ignition cycle.

### **Bosch W145T35 NOS Spark Plug (14mm) Pros and Cons**

1. **High-Quality Material** Made with a nickel-plated copper core, ensuring excellent heat dissipation and durability, which extends the lifespan of the plug compared to standard options.

2. **Longer Service Life** The robust construction reduces fouling and wear, making it suitable for high-performance or demanding engines, especially in European vehicles like Mercedes, Volvo, BMW, NSU, Z ndapp, and VW.

3. **Optimal Heat Range** The W145T35 is designed for medium heat ranges (typically 400 500 C), balancing efficiency in both cold starts and high-performance applications without risking pre-ignition.

4. **Compatibility with European Engines** Specifically engineered for older European vehicles (pre-1990s) and some modern high-performance setups, ensuring proper ignition timing and power delivery.

5. **NOx Reduction Benefits** The copper core helps maintain cleaner combustion, which can slightly improve emissions performance in older vehicles.

6. **Easy Installation** Standard 14mm thread size makes it straightforward to install without requiring special tools.

7. **Cost-Effective for Long-Term Use** While initially more expensive than basic plugs, its longevity reduces replacement frequency, saving money over time.

1. **Higher Initial Cost** More expensive than standard iridium or platinum plugs, which may deter budget-conscious buyers.

2. **Not Ideal for Modern Catalytic Converters** Some newer vehicles with strict emissions standards may require plugs with tighter tolerances or different heat ranges, making this plug less optimal.

3. **Potential for Overheating in High-Performance Tuned Engines** If the engine runs excessively hot (e.g., due to forced induction or aggressive tuning), the medium heat range could lead to pre-ignition or reduced efficiency.

4. **Limited Availability in Some Regions** As a NOS (new old stock) or specialty part, it may not be as widely stocked as mass-produced plugs.

5. **Not Suitable for All Engine Types** Older European vehicles (especially those with carburetors or less refined ignition systems) may benefit more than modern fuel-injected engines with precise ignition control.

6. **Requires Proper Gapping** Incorrect gap settings can lead to misfires or poor performance, requiring careful adjustment during installation.

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### **Conclusion**

The **Bosch W145T35 NOS spark plug** is an excellent choice for **older European vehicles (Mercedes, BMW, Volvo, NSU, Z ndapp, VW, etc.)** with carburetors or naturally aspirated engines where longevity and performance are prioritized. Its copper core and medium heat range make it reliable for high-mileage or high-performance applications, reducing the need for frequent replacements. However, it is **not ideal for modern fuel-injected engines with strict emissions requirements** or heavily tuned setups prone to overheating.

For **modern vehicles (post-2000s)**, a **platinum or iridium plug with a tighter heat range** (e.g., Bosch FR7LC or similar) would be a better fit. For **classic or high-mileage European cars**, the W145T35 offers superior durability and performance.

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### **Recommendation**

- You own a **pre-1990s European vehicle** (especially carbureted or naturally aspirated).

- You prioritize **longevity and reliable ignition** over the latest emissions compliance.

- Your engine runs **moderate to high RPMs** without excessive heat stress.

- You are willing to pay a premium for **superior build quality**.

- Your vehicle is **modern (post-2000s) with a catalytic converter** opt for a **platinum/iridium plug with a colder heat range**.

- You have a **highly tuned or forced-induction engine** a **colder plug (e.g., FR7LC) may be safer**.

- You are on a **tight budget** standard plugs may suffice for low-mileage or lightly used cars.

For **optimal performance in classic European vehicles**, the **W145T35 is a strong, long-lasting choice**. For everything else, evaluate your engine s specific needs before purchasing.

Details:

If something looks wrong on my side please reach out to me. This is a classic 1960s 1970s European spec plug, widely used across iconic German and Scandinavian vehicles. The metal shell shows light surface oxidation consistent with long term storage, which does not affect function. The porcelain is clean with strong, legible markings.

I will also combine shipping. Genuine vintage Bosch W145T35 spark plug, New Old Stock and complete with its original box. 1/ 2 12.7mm short reach Type: Copper Core Era: 1960s 1970s production Made in Germany Includes original Bosch box. The original Bosch box is included and displays nice color with minor shelf wear typical of vintage packaging.

The inclusion of the original box adds strong collector appeal, as these vintage Bosch packages are highly sought after for display and authenticity. I will answer questions, provide more pictures and do research when needed just reach out to me. Brand: Bosch model: W145T35 Thread Size: 14mm Reach: Approx. The plug is unused and never installed.

part #: w145t35 prices

• $6.00-$13.99

specifications cyclesparkplugs:

• for makes: Mercedes, Volvo, Bmw
• brand: Bosch
• mpn: W145t35
• type: Spark Plug
• thread diameter: 14 Mm
• machine type: Dual Sport Motorcycle, Off-road Motorcycle, Street Motorcycle
• vintage part: Yes
• country of origin: United States

general cyclesparkplugs:

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

offer cyclesparkplugs:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: March 19, 2026
• quantity: 1
• best offers: True

shipping cyclesparkplugs:

• cost: $0.00
• carrier: USPS
• type: Calculated
• class: Standard
• transit: 5-11 Days
• service: USPS Ground Advantage

seller cyclesparkplugs:

• rating: 100.0%
• # reviews: 33
• city: Richmond, Virginia

payments cyclesparkplugs:

• other
• credit card: Diners-club
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returns cyclesparkplugs:

• policy: No Returns

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