10-4221MH Cap Spark Plug 688966009529 120 12MM Ks

( Brand: K-s ), ( Manufacturer Part Number: 10-4221MH ), ( Compatible Spark Plug Size: 10 Mm ), ( Compatible Spark Plug Size 2: 12 Mm ), ( Connector Angle: 120 ), ( Type: Spark Plug ), ( Units: Each ), ( Part Type: Electrical ), ( Alt Mpn 1: 2104-0437 ), ( Average Delivery Time: 2-3 Days ), ( Package Weight: 0.13 ), ( Package Length: 0.01 ), ( Manufacturer Warranty: 30 Days ), ( UPC: 688966009529 )

Review K S Ks Cap Spark Plug 120 Long And 12mm fits 2010

The KS10-4221MH cap spark plug is a premium replacement option for vehicles in need of a new spark plug. This specific model is designed for applications requiring a 120mm length, 10mm thread diameter, and a 12mm reach. The MH designation indicates that this spark plug features a copper core and iridium tip.

The copper core of the KS10-4221MH spark plug is known for its superior conductivity, which ensures efficient transfer of electrical energy to the combustion chamber. This results in a more complete and efficient combustion process, leading to improved engine performance and fuel economy.

The iridium tip of this spark plug is highly durable and offers excellent resistance to fouling, ensuring a longer service life compared to traditional spark plugs with nickel or other tip materials. Iridium is also known for its excellent spark-jumping ability, which results in a stronger and more consistent spark, further enhancing the combustion process.

The KS10-4221MH spark plug is also designed with a fine-wire center electrode, which provides a smaller gap between the electrode and the insulator, resulting in a faster and more responsive ignition. This can lead to smoother engine operation and improved cold starting performance.

The KS10-4221MH spark plug also features a long insulator nose, which helps to prevent fouling by keeping the insulator away from the deposits that can build up on the cylinder wall. This design also makes it easier to install and remove the spark plug, as the longer nose provides more clearance for tools and fingers.

Overall, the KS10-4221MH cap spark plug is a high-performance replacement option for vehicles that require a 120mm length, 10mm thread diameter, and 12mm reach. Its copper core and iridium tip provide superior conductivity and durability, while its fine-wire center electrode and long insulator nose offer faster ignition and improved installation ease.

The KS10-4221MH cap spark plug, part number 120 10 12mm, is a commonly used spark plug for various applications. Here are some potential pros and cons that might help you make an informed decision about purchasing this spark plug:

1. Durability: This spark plug is known for its long service life, which can save you money in the long run by reducing the frequency of replacements.

2. Performance: The MH-series spark plugs offer improved combustion efficiency, which can lead to better engine performance and fuel economy.

3. Resistance to Fouling: The resistor-type design of this spark plug helps to reduce fouling, which is a common issue with traditional spark plugs.

1. Cost: Compared to some other spark plug options, the KS10-4221MH can be more expensive.

2. Installation: Some users have reported that installing this spark plug can be more difficult than traditional spark plugs due to its unique design.

3. Compatibility: While this spark plug is commonly used, it may not be compatible with all engine types or models.

In conclusion, the KS10-4221MH cap spark plug offers durability, improved performance, and resistance to fouling. However, it can be more expensive than some other options, and installation may be more difficult. Additionally, compatibility should be carefully considered before making a purchase.

If you are looking for a reliable and long-lasting spark plug that offers improved engine performance, the KS10-4221MH cap spark plug could be a good investment. However, if cost is a significant concern or if you are unsure about compatibility, it may be worth exploring other options as well. Ultimately, the decision to purchase this spark plug will depend on your specific needs and preferences.

Details:

COMPATIBLE SPARK PLUG SIZE 212mm. Combined shipping available. COMPATIBLE SPARK PLUG SIZE10mm. Ks CAP SPARK PLUG 120 LONG 10 12MM 10-4221MH:: Spark Plug Cap Includes resistor cover and both end rubber caps.

100% satisfaction guaranteed. PART TYPE Electrical. TYPE Spark Plug.

part #: 104221mh prices

• $7.99-$13.93

specifications indasse:

• for years: 2010
• brand: K-s
• mpn: 10-4221mh
• compatible spark plug size: 10 Mm
• compatible spark plug size 2: 12 Mm
• connector angle: 120
• type: Spark Plug
• units: Each
• part type: Electrical
• alt mpn 1: 2104-0437
• average delivery time: 2-3 Days
• package weight: 0.13
• package length: 0.01
• manufacturer warranty: 30 Days
• upc: 688966009529

offer indasse:

• availability: In Stock
• options: Ship-to-home
• started: November 26, 2025
• sold: 0

general indasse:

• Motorcycle Scooter Parts Accessories > Lighting Lamps > Turn Signal Light Assemblies
• condition: New

shipping indasse:

• transit: 5-8 Days
• cost: $0.00
• class: Standard, Expedited, One-day
• service: USPS Ground Advantage, FedEx 2Day, FedEx Standard Overnight
• carrier: USPS, FedEx
• type: Calculated

payments indasse:

• wallet: Paypal
• credit card: Mastercard
• other

seller indasse:

• city: Hilliard, Ohio
• # reviews: 493985
• rating: 99.4%

returns indasse:

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

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