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- Champion D-21 D21 Spark Plug
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Item #:
4525297
Champion D-21 D21 Spark Plug
85% of respondents would recommend this to a friend
Item #:
4525297
FJD 71
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Imported from USA store
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Order now and get it around Friday, October 09
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What Stands Out
High Performance
Designed for optimal ignition, the Champion D-21 spark plug ensures superior engine performance, enhancing fuel efficiency and reducing emissions compared to standard plugs in its class.
Durability
Built with robust materials, the D-21 spark plug offers long-lasting durability and resistance to wear, making it a reliable choice for both everyday drivers and performance enthusiasts.
Easy Installation
The Champion D-21 spark plug features a user-friendly design that allows for straightforward installation, enabling vehicle owners to easily upgrade their spark plugs without professional assistance.
Product Details
- Genuine Champion D-21 D21 spark plug replacement part
- Designed as a specific replacement for Champion PN: D-21 D21
- Ensures optimal performance and compatibility with compatible engines
- Manufactured to meet Champion's quality and reliability standards
- Ideal for maintaining and restoring engine ignition efficiency
- Compatible with a range of engines requiring Champion D-21 D21 spark plugs
| Brand Name | Champion |
| Manufacturer Part Number | D21 |
| Number of Items | 4 |
| Unit Count | 4 Count |
| OEM Equivalent Part Number | D21 |
| Included Components | 502 |
| Item Weight | 11.52 ounces (326.59 grams) |
| Manufacturer | Champion |
| Model Number | 502 |
| Thread Size | 14mm |
| Compatible with Vehicle Type | Car, Truck |
| Automotive Fit Type | Vehicle Specific Fit |
| Core Material | Copper |
| Top Material Type | Metal |
| Brand | Champion |
| Vehicle Service Type | Car, Truck |
Who Should Buy?
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Classic Car Owners
Ideal for vintage vehicles requiring reliable ignition for optimal performance and fuel efficiency.
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Small Engine Users
Perfect for lawn mowers and garden tools needing consistent spark for better operation and longevity.
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DIY Mechanics
Great choice for hobbyists looking to replace spark plugs efficiently with good reliability and easy installation.
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High-Performance Vehicles
Not suitable for cars demanding high-performance plugs, which require advanced materials for greater efficiency.
Product Description
Champion D-21 D21 Spark Plug
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the Champion D-21 D21 Spark Plug used for?
Answer: The Champion D-21 D21 Spark Plug is primarily used in small engines, such as those found in lawn mowers, chainsaws, and other outdoor power equipment. It helps to ignite the air-fuel mixture, ensuring efficient combustion. By providing a strong spark, it contributes significantly to engine performance and efficiency. For equipment owners, using the right spark plug is crucial for maintaining optimal engine function and prolonging the lifespan of the device. -
Question:
How does the Champion D-21 spark plug improve engine performance?
Answer: The Champion D-21 spark plug plays a critical role in enhancing engine performance by delivering a reliable spark at the right moment during the combustion cycle. This precision ignition allows for better fuel combustion, which translates to increased power output and smoother operation. For users, this means their equipment starts more easily and runs more efficiently, especially during strenuous tasks like mowing thick grass or clearing fallen trees. -
Question:
What are the specifications of the Champion D-21 Spark Plug?
Answer: The Champion D-21 Spark Plug features a 14mm thread diameter, a reach of 19mm, and a heat rating designed to suit a variety of small engines. It typically has a copper core for superior conductivity and a pre-set gap to ensure optimal performance right out of the box. Knowing these specifications helps users choose the correct spark plug for their specific equipment, ensuring compatibility and functionality. -
Question:
How often should I replace the Champion D-21 Spark Plug?
Answer: Typically, the Champion D-21 Spark Plug should be replaced every season or after about 100 hours of use, although this may vary based on the use and upkeep of your engine. Regular maintenance, including visual inspections, can help determine the right timing for replacement. For instance, if you notice difficulty starting the engine or a drop in performance, it’s advisable to check the spark plug condition and consider replacement. -
Question:
What tools do I need to install the Champion D-21 Spark Plug?
Answer: To install the Champion D-21 Spark Plug, you will need a spark plug socket, a ratchet, and possibly a torque wrench for precise fitting. It's also helpful to have a gap tool to check the spark plug gap before installation. Having the right tools ensures that the installation process is straightforward and that the spark plug is securely fitted, which is essential for maintaining efficient engine operation. -
Question:
Can I use the Champion D-21 Spark Plug in all brands of lawn mowers?
Answer: While the Champion D-21 Spark Plug is compatible with many lawn mower brands, it's essential to verify your mower's specifications before replacement. Different engine designs may require specific spark plugs, so always check your owner’s manual. Using the correct spark plug not only fits well but also ensures the best performance and longevity of your mower. -
Question:
What should I do if my Champion D-21 Spark Plug appears worn?
Answer: If your Champion D-21 Spark Plug appears worn, such as having a burned or corroded appearance, it’s crucial to replace it. Worn plugs can lead to poor engine performance, increased fuel consumption, and difficulty starting. Inspect plugs regularly to ensure they are in good condition for peak performance during challenging tasks like cutting dense grass or rough terrain. -
Question:
Is the Champion D-21 Spark Plug suitable for two-stroke engines?
Answer: Yes, the Champion D-21 Spark Plug is often suitable for two-stroke engines commonly found in chainsaws and certain smaller motorcycles. The plug's design supports the specific combustion requirements of two-stroke engines, facilitating smooth operation and efficient ignition. Users with such equipment can rely on this spark plug to ensure effective performance, particularly in demanding conditions. -
Question:
Where can I buy Champion D-21 D21 Spark Plug in Fiji?
Answer: You can buy the Champion D-21 D21 Spark Plug from Ubuy, which offers a convenient shopping experience and a wide selection of automotive products. Ubuy specializes in delivering quality items along with excellent customer service, making it an ideal destination for all your spark plug and related needs in Fiji.
Champion Spark Plugs 502 Editorial Review
The Champion D-21 D21 Spark Plug is a OEM replacement part for the IH Cub Lo-Boy 154 tractor. It has been reported to fit all models of the tractor. However, there have been complaints about the product description on the website. The main picture shows four spark plugs, but customers only receive one for the price. The pricing is also higher than what can be found at local stores. Overall, the product has received mixed feedback due to the discrepancy in product presentation and pricing.
Customer Reviews & Ratings
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Pros
- OEM replacement part for IH Cub Lo-Boy 154 tractor
- Fits all models of the tractor
Cons
- Product presentation is misleading with the picture showing four spark plugs, but only one is received
Platform Trust & Buyer Confidence
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Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
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“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
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Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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