ONAN 167-0237 Nos Spark Plug

( Brand: Onan ), ( Manufacturer Part Number: 167-0237 ), ( Type: Spark Plug ), ( Country Of Origin: United States ), ( Location: P5 )

Review ONAN Nos Spark Plug Oem Lot Of

The **Onan 167-0237 NOS Spark Plug** is a meticulously preserved, no-service (NOS) automotive component designed to deliver reliable ignition performance in vintage and classic diesel engines, particularly those manufactured by Onan Corporation a brand renowned for its robust industrial and marine power systems. This spark plug is a critical component in older Onan diesel generators, compressors, and auxiliary power units, where consistent and precise ignition is essential for smooth operation and longevity. Crafted from high-quality materials, the 167-0237 features a robust nickel-plated steel shell that ensures durability against the harsh conditions often found in industrial environments, while its copper core promotes efficient heat dissipation to prevent pre-ignition and electrode fouling. The plug s design incorporates a fine-wire electrode, which enhances spark clarity and reduces the risk of misfires, making it ideal for engines that demand consistent power output. Whether restoring a classic Onan generator for historical preservation or maintaining a fleet of older industrial equipment, this NOS spark plug offers a direct replacement option that aligns with original specifications, ensuring optimal combustion efficiency and engine reliability. Its authenticity as a no-service unit guarantees that it has not been subjected to wear or modification, preserving its original performance characteristics for years of dependable service. For collectors, restorers, and operators of vintage Onan machinery, the 167-0237 NOS Spark Plug represents a seamless blend of historical accuracy and functional excellence.

### Pros and Cons of buying a **Onan 167-0237 NOS Spark Plug**

1. **Original Equipment Manufacturer (OEM) Quality** The 167-0237 is a genuine Onan part, meaning it meets the manufacturer s original specifications for performance, durability, and compatibility with Onan engines. This reduces the risk of poor fitment or premature failure compared to aftermarket alternatives.

2. **Reliability and Longevity** NOS (New Old Stock) parts are sourced from inventory that was never installed, ensuring they are in pristine condition. Onan spark plugs are known for their robust construction, which can extend the life of the engine by preventing misfires, fouling, and excessive wear.

3. **Exact Fitment** Since this is a direct replacement part for Onan engines (commonly found in generators, pumps, and industrial equipment), there s no guesswork about sizing or threading. This minimizes the risk of installation errors that could damage the engine.

4. **Consistency with Original Performance** Using an OEM spark plug ensures the engine operates as it was designed to, maintaining power output, fuel efficiency, and smooth operation. Aftermarket plugs may alter these characteristics.

5. **Warranty Coverage** If purchased from an authorized dealer or distributor, the part may still carry a warranty, providing recourse in case of defects. NOS parts are often treated as new, so some warranties may apply.

6. **Easier Maintenance Tracking** Since it s an original part, it simplifies record-keeping for maintenance logs, which is useful for fleet management or compliance with service intervals.

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1. **Higher Cost** OEM NOS parts are typically more expensive than aftermarket alternatives. The price reflects the brand reputation, quality control, and direct sourcing from the manufacturer s inventory.

2. **Limited Availability** NOS parts are drawn from discontinued stock, meaning they may not be readily available in all regions or from all suppliers. This could lead to longer lead times or the need to order from specialty distributors.

3. **Overkill for Some Applications** If the engine is well-maintained and the original spark plug was functioning adequately, replacing it with a NOS part may not offer a significant advantage beyond peace of mind. For older or less critical equipment, an aftermarket plug of comparable quality might suffice.

4. **Potential for Obsolescence** Onan has updated its engine designs over time, and while the 167-0237 may fit older models, newer engines might require updated specifications. Always verify compatibility with the exact engine model.

5. **No Performance Upgrades** Unlike some aftermarket spark plugs designed for higher performance (e.g., colder plugs for better ignition), the NOS part is optimized for stock operation. If you re looking to modify engine performance, this may not be the best choice.

6. **Environmental and Ethical Considerations** NOS parts are sourced from returned or surplus inventory, which may raise questions about sustainability. Aftermarket parts, while not always "new," are often manufactured to modern standards and may have a lower environmental impact.

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The **Onan 167-0237 NOS spark plug** is an excellent choice if you prioritize **reliability, exact fitment, and OEM quality** for your Onan-powered equipment. It s ideal for critical applications where engine performance and longevity are non-negotiable, or if you prefer to stick with original components for consistency. However, if budget or availability is a concern, or if the engine is not heavily used, a high-quality aftermarket alternative (e.g., from NGK, Champion, or Bosch) with similar specifications may offer a cost-effective solution without sacrificing performance.

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- You need a **direct replacement** for an older Onan engine and want to ensure compatibility and longevity.

- The engine is **high-value or critical** to your operations (e.g., backup generators, industrial machinery).

- You prefer **OEM parts** for maintenance consistency and warranty coverage.

- You can justify the **higher cost** based on the part s reliability.

- You re working with a **budget constraint** and can find a plug with identical specifications (e.g., NGK 7397 or Champion RC12YC) from a reputable brand.

- The engine is **older or less critical**, and you re unsure if the NOS part offers a meaningful advantage.

- You re unable to locate the NOS part easily, and aftermarket options are readily available.

**Final Tip:** Always cross-reference the plug s gap, thread size, and heat range with your engine s specifications to ensure a perfect match. If in doubt, consult the engine s service manual or a trusted mechanic.

Details:

Lot of 2 NOS Onan 167-0237 Spark Plug OEM.

part #: 1670237 prices

• $14.00-$15.00

specifications cyclesparkplugs:

• brand: Onan
• mpn: 167-0237
• type: Spark Plug
• country of origin: United States
• location: P5

general cyclesparkplugs:

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

offer cyclesparkplugs:

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

shipping cyclesparkplugs:

• carrier: USPS
• class: Standard
• cost: $0.00
• transit: 3-9 Days
• type: Fixed
• service: USPS Ground Advantage

returns cyclesparkplugs:

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

seller cyclesparkplugs:

• city: Wewoka, Oklahoma
• rating: 99.6%
• # reviews: 2168

payments cyclesparkplugs:

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• wallet: Apple-pay
• credit card: Discover

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