Skip to Content

NGK Spark Plug R5671A9 crosses to AR3933

https://www.gre6.com/web/image/product.template/11468/image_1920?unique=4ad404e

Crosses to AR3933 and doesn’t mess around—this is a straight-up race plug for high-compression chaos and WOT living. The NGK R5671A-9 is cold, non-resistor, short reach, and made to handle the kind of abuse that melts lesser plugs.

If your setup is spicy, this is the plug that keeps it lit without flinching. Add to cart and let the ignition party begin.

Spark Plug, Racing, Gasket Seat, 14mm Thread, .750 in. Reach, Non-Resistor, Each

6.26 6.26 USD 6.26

6.26

(6.26 / Units)

    This combination does not exist.


    FAST SHIPPING WITH
     USPS or UPS
    Delivery Guarantee 

    • 20-Day no delivery refund 
    • $5.00 Credit for Delays in transit 

    Security & Privacy
    PCI-DSS Compliant Payments in store, online & at the racetrack!
    Ambassador Perks:

    • Earn 10–20% in store credit commissions.
    • Easy-to-use tools: Custom promo codes, store links, and sampler links provided.
    • Simple tracking: Get rewarded for every completed customer order you refer.

    Apply Now: Send an email to sales@gre6.com (Subject: AMBASSADOR APPLICATION) to get started.


    Internal Reference: NGK-5238

    a row of checkered flags blowing in the wind

    Let’s get in touch

    sales@gre6.com
    +1-860-646-1166
    96 BURNHAM STREET
    SOUTH WINDSOR, CT 06074
    GPS: May have to route to 96 Burnham St, East Hartford

    Monday
    10am-6.00pm

    Tuesday
    10am-6.00pm

    Wednesday
    10am-6.00pm

    Thursday
    10am-6.00pm

    Friday
    10am-6.00pm

    Saturday
    on call

    Sunday
    Closed