NGK RACING PLUG R004QJ-10 R0045J-10 37-R0045J-10 NG4216
4.1 Trustpilot 99.9% positive on eBay
Free UK delivery 2–4 business days
Spread the cost with 
18+, T&Cs apply
NGK Racing Spark Plug R0045Q-10 (4216). Features a surface gap tip configuration for extreme durability and precision, handcrafted in Japan to withstand demanding racing environments. Surface discharge plugs are ideal for high-compression engines or situations with limited valve/piston clearance and are nearly immune to preignition. May be susceptible to fouling in colder conditions. Specifications: Part Number 37-R0045Q-10, NGK Reference Number 4216, Thread Size 10 mm, Reach 19 mm (3/4"), Hex Spanner Size 16 mm (5/8"), Terminal Type M4 Thread, Seal Type Gasket Seat, Electrode Material Standard Nickel, Projection Type Non-Projected, Tip Configuration Surface Gap, Pack Size 1 Single Unit, Resistor Yes, Gap 0.043" (1.1 mm), Heat Range 10. Cross Reference Numbers: OLD R0045J-10, 37-R0045J-10. NGK surface gap plugs are specialized for racing environments where conventional ground strap plugs are unsuitable, delivering reliable ignition even under extreme compression and temperature conditions for maximum performance. Engineered for precision and durability.
- SKU
- 37-R0045Q-10
- Brand
- NGK
- Availability
- In Stock (12)
- General Product Group
- Ignition & Electrical Parts
- General Product Type
- Spark Plug
- Variant Id
- 235637
FULL DESCRIPTION
NGK Racing Spark Plug - R0045Q-10 (4216)
What it is:
This is a high-performance racing spark plug designed by NGK to meet the extreme demands of competitive motorsport. Engineered with a surface gap tip configuration, it offers superior durability and ignition precision in high-compression racing engines where conventional spark plugs may falter.
Key Features:
- Racing Performance: Specifically built for high-performance racing applications.
- Surface Gap Tip: Features a unique surface gap design for extreme durability and precise ignition.
- Handcrafted in Japan: Manufactured with meticulous attention to detail in Japan to withstand harsh racing conditions.
- Ideal for High Compression: Surface discharge plugs are perfect for engines with high compression or limited valve and piston clearance.
- Preignition Resistance: Offers exceptional immunity to preignition, making it suitable for very demanding operational environments.
- Durable Construction: Engineered for longevity and reliability under intense heat and pressure.
- Note: This plug may be more prone to fouling in colder operating conditions.
Specifications:
- Part Number: 37-R0045Q-10
- NGK Reference: 4216
- Thread Size: 10 mm
- Reach: 19 mm (3/4 inch)
- Hex Spanner Size: 16 mm (5/8 inch)
- Terminal Type: M4 Thread
- Seal Type: Gasket Seat
- Electrode Material: Standard Nickel
- Projection Type: Non-Projected
- Tip Configuration: Surface Gap
- Pack Size: 1 Single Unit
- Resistor: Yes
- Gap: 0.043 inch (1.1 mm)
- Heat Range: 10
Cross Reference Numbers:
- OLD R0045J-10
- 37-R0045J-10
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
Call or email us with your make, model and year and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. 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.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.