Champion Spark Plug RA4HC (OE073/T10)
4.1 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Spread the cost with
Champion Copper Plus Small Engine Spark Plug RA4HC offers dependable performance and durability with its copper core electrode, ensuring consistent ignition and precise heat regulation. This OE type replacement plug resists fouling for consistent spark performance and minimizes misfires. The copper core centre electrode allows for precise heat range control, extending the spark plug's lifespan and enhancing engine efficiency. It provides superior corrosion resistance for longevity and reliability in harsh environments and is built to ISO and SAE standards for proven performance. Specifications include: Plug Type RA4HC, Centre Electrode Tip Material Nickel, Pre-Gap Size 0.025 IN / 0.65 MM, Ground Electrode Quantity 1, Hex Size 0.625 IN / 15.880 MM, Insulator Height 0.03 IN, Manufacturer Heat Range 4, Seat Type Flat, Reach 0.75 IN, Thread Diameter 0.472 IN / 12.000 MM, Resistor Type Yes, Ground Electrode Core Material Nickel, Washer Included Yes, Electrical Terminal Type Removable Nut, Washer Type Crush, Indexed No, Part Description Spark Plug, Centre Electrode Diameter 0.078 IN, Ground Electrode Material Nickel Copper Alloy, Installed Height 1.99 IN, Insulator Projection 0.03 IN, Taper Diameter 0.2 IN. Cross Reference Numbers: BOSCH XR2CS, XR5DC, YR5DDE, YR7DE; DENSO X27EPR-ZU9, X27EPRU9, X31ESZU, XU27EPRU, XU27EPRZU; DUCATI 67040071A, 67040081A, 67040331A; NGK DCPR9E, DPR9EVX-9, DPR9Z, KR9CI; SPLITFIRE SF415B, SF416B; TORCH D8C.
- SKU
- 37-OE073
- Brand
- Champion Spark Plugs
- Availability
- In Stock (18)
- General Product Group
- Ignition & Electrical Parts
- General Product Type
- Spark Plug
- Variant Id
- 317874
FULL DESCRIPTION
Champion Copper Plus Small Engine Spark Plug - RA4HC
Ensure your engine runs smoothly and reliably with the Champion Copper Plus Small Engine Spark Plug - RA4HC. This spark plug is designed with a copper core electrode for excellent conductivity and precise heat control, promoting optimal engine performance and extended component life.
Key Features:
- Copper Plus Technology: Engineered for dependable performance and durability, providing consistent ignition in various operating conditions.
- OE Type Replacement: Designed as a direct replacement for original equipment spark plugs, ensuring a proper fit and easy installation.
- Fouling Resistance: Helps prevent fouling, maintaining consistent spark performance and reducing the likelihood of misfires.
- Copper Core Centre Electrode: Facilitates accurate heat range management, contributing to a longer spark plug lifespan and improved engine efficiency.
- Superior Corrosion Resistance: Built to withstand corrosive environments, ensuring lasting reliability.
- ISO and SAE Standards Compliant: Manufactured to meet rigorous industry standards for proven performance and dependability.
Spark Plug Specifications:
- Plug Type: RA4HC
- Pre-Gap Size: 0.025 inches (0.65 mm)
- Ground Electrode Quantity: 1
- Hex Size: 0.625 inches (15.880 mm)
- Reach: 0.75 inches
- Thread Diameter: 0.472 inches (12.000 mm)
- Resistor Type: Yes
- Washer Included: Yes
- Classification: Champion Copper Plus Small Engine
- Electrical Terminal Type: Removable Nut
- Washer Type: Crush
- Centre Electrode Diameter: 0.078 inches
- Installed Height: 1.99 inches
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).
Call or email us with your make, model and year and we will check it for you before you order.
Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.


