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NGK Iridium IX Spark Plug Box of 4 (YR55IX)

NGK Iridium IX Spark Plug Box of 4 (YR55IX)

SKU:NGK7588

Category: Spark Plugs
Vendor: NGK
Regular price $33.80
Regular price Sale price $33.80
Sale Sold out
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NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.

This Part Fits:

Year Make Model Submodel
1975 Buick Apollo Base
1975 Buick Apollo SR
1975 Chevrolet Bel Air Base
1978 Chevrolet C10 Big Ten
1975,1977-1978 Chevrolet C10 Cheyenne
1975,1977-1978 Chevrolet C10 Custom Deluxe
1975,1977-1978 Chevrolet C10 Scottsdale
1975,1977-1978 Chevrolet C10 Silverado
1975,1977-1978 Chevrolet C10 Suburban Custom Deluxe
1975,1977-1978 Chevrolet C10 Suburban Scottsdale
1975,1977-1978 Chevrolet C10 Suburban Silverado
1975,1977-1978 Chevrolet C20 Cheyenne
1975,1977-1978 Chevrolet C20 Custom Deluxe
1975,1977-1978 Chevrolet C20 Scottsdale
1975,1977-1978 Chevrolet C20 Silverado
1975,1977-1978 Chevrolet C20 Suburban Custom Deluxe
1975,1977-1978 Chevrolet C20 Suburban Scottsdale
1975,1977 Chevrolet C20 Suburban Silverado
1975,1977-1978 Chevrolet C30 Cheyenne
1975,1977-1978 Chevrolet C30 Custom Deluxe
1975,1977-1978 Chevrolet C30 Scottsdale
1975,1977-1978 Chevrolet C30 Silverado
1975 Chevrolet Camaro Base
1975 Chevrolet Camaro LT
1975 Chevrolet Camaro RS
1975 Chevrolet Caprice Classic
1975 Chevrolet Caprice Classic Sport
1975 Chevrolet Caprice Estate Wagon
1975 Chevrolet Corvette Stingray
1975,1978 Chevrolet El Camino Base
1975 Chevrolet El Camino Classic
1978 Chevrolet El Camino Conquista
1975,1978 Chevrolet El Camino SS
1975-1978 Chevrolet G10 Beauville
1975-1978 Chevrolet G10 Chevy Van
1975-1978 Chevrolet G10 Sportvan
1974 Chevrolet G10 Van Base
1974 Chevrolet G10 Van Sportvan
1975-1978 Chevrolet G20 Beauville
1975-1978 Chevrolet G20 Chevy Van
1978 Chevrolet G20 Nomad
1975-1978 Chevrolet G20 Sportvan
1974 Chevrolet G20 Van Base
1974 Chevrolet G20 Van Sportvan
1975-1978 Chevrolet G30 Beauville
1975-1978 Chevrolet G30 Chevy Van
1975-1978 Chevrolet G30 Hi-Cube
1975-1978 Chevrolet G30 Sportvan
1974 Chevrolet G30 Van Base
1974 Chevrolet G30 Van Sportvan
1975 Chevrolet Impala Base
1975 Chevrolet Impala Custom
1975 Chevrolet Impala Sport
1975,1977-1978 Chevrolet K10 Cheyenne
1975,1977-1978 Chevrolet K10 Custom Deluxe
1975,1977-1978 Chevrolet K10 Scottsdale
1975,1977-1978 Chevrolet K10 Silverado
1975,1977-1978 Chevrolet K10 Suburban Custom Deluxe
1975,1977-1978 Chevrolet K10 Suburban Scottsdale
1975,1977 Chevrolet K10 Suburban Silverado
1975,1977-1978 Chevrolet K20 Cheyenne
1975,1977-1978 Chevrolet K20 Custom Deluxe
1975,1977-1978 Chevrolet K20 Scottsdale
1975,1977-1978 Chevrolet K20 Silverado
1975,1977-1978 Chevrolet K20 Suburban Custom Deluxe
1975,1977-1978 Chevrolet K20 Suburban Scottsdale
1975,1977 Chevrolet K20 Suburban Silverado
1977-1978 Chevrolet K30 Cheyenne
1977-1978 Chevrolet K30 Custom Deluxe
1977-1978 Chevrolet K30 Scottsdale
1977-1978 Chevrolet K30 Silverado
1975,1977-1978 Chevrolet K5 Blazer Cheyenne
1975,1977-1978 Chevrolet K5 Blazer Custom Deluxe
1978 Chevrolet K5 Blazer Silverado
1975 Chevrolet Laguna Base
1975 Chevrolet Laguna S3
1975 Chevrolet Malibu Base
1975 Chevrolet Malibu Classic
1975 Chevrolet Malibu Classic Estate
1975 Chevrolet Monte Carlo S
1975 Chevrolet Monza 2+2
1975 Chevrolet Monza S
1975 Chevrolet Nova Base
1975 Chevrolet Nova Custom
1975 Chevrolet Nova LN
1975 Chevrolet Nova Police
1975,1977 Chevrolet P10 Base
1975,1977 Chevrolet P10 Step-Van
1975,1977-1978 Chevrolet P20 Base
1975,1977-1978 Chevrolet P20 Step-Van
1975,1977-1978 Chevrolet P30 Base
1975,1977-1978 Chevrolet P30 Step-Van
1975,1977-1978 GMC C15 Base
1977-1978 GMC C15 Heavy Half
1975,1977-1978 GMC C15 High Sierra
1977 GMC C15 Indy Hauler
1975,1977-1978 GMC C15 Sierra Classic
1975,1977-1978 GMC C15 Sierra Grande
1978 GMC C15 Street Coupe
1975,1977-1978 GMC C15 Suburban Base
1975,1977-1978 GMC C15 Suburban High Sierra
1975,1977-1978 GMC C15 Suburban Sierra Classic
1975,1977-1978 GMC C15 Suburban Sierra Grande
1975,1977-1978 GMC C25 Base
1975,1977-1978 GMC C25 High Sierra
1975,1977-1978 GMC C25 Sierra Classic
1975,1977-1978 GMC C25 Sierra Grande
1975,1977-1978 GMC C25 Suburban Base
1975,1977-1978 GMC C25 Suburban High Sierra
1975,1977-1978 GMC C25 Suburban Sierra Classic
1975,1977-1978 GMC C25 Suburban Sierra Grande
1975,1977-1978 GMC C35 Base
1975,1977-1978 GMC C35 High Sierra
1975,1977-1978 GMC C35 Sierra Classic
1975,1977-1978 GMC C35 Sierra Grande
1978 GMC Caballero Base
1978 GMC Caballero Diablo
1978 GMC Caballero Laredo
1975,1977-1978 GMC G15 Rally
1975,1977-1978 GMC G15 Rally STX
1975,1977-1978 GMC G15 Vandura
1974 GMC G15/G1500 Van Rally
1974 GMC G15/G1500 Van Vandura
1975,1977-1978 GMC G25 Rally
1975,1977-1978 GMC G25 Rally STX
1975,1977-1978 GMC G25 Vandura
1974 GMC G25/G2500 Van Rally
1974 GMC G25/G2500 Van Vandura
1975,1977-1978 GMC G35 Magnavan
1977-1978 GMC G35 Rally
1977-1978 GMC G35 Rally Camper Special
1977-1978 GMC G35 Rally STX
1977-1978 GMC G35 Vandura
1977-1978 GMC G35 Vandura Special
1974 GMC G35/G3500 Van Base
1974 GMC G35/G3500 Van Rally
1974 GMC G35/G3500 Van Vandura
1975,1977-1978 GMC Jimmy Base
1975,1977-1978 GMC Jimmy High Sierra
1975,1977-1978 GMC Jimmy Sierra Classic
1975,1977-1978 GMC Jimmy Sierra Grande
1978 GMC Jimmy Street Coupe
1975,1977-1978 GMC K15 Base
1975,1977-1978 GMC K15 High Sierra
1977 GMC K15 Indy Hauler
1975,1977-1978 GMC K15 Sierra Classic
1975,1977-1978 GMC K15 Sierra Grande
1975,1977 GMC K15 Suburban Base
1975,1977 GMC K15 Suburban High Sierra
1975,1977 GMC K15 Suburban Sierra Classic
1975,1977 GMC K15 Suburban Sierra Grande
1975,1977-1978 GMC K25 Base
1975,1977-1978 GMC K25 High Sierra
1975,1977-1978 GMC K25 Sierra Classic
1975,1977-1978 GMC K25 Sierra Grande
1975,1977-1978 GMC K25 Suburban Base
1975,1977-1978 GMC K25 Suburban High Sierra
1975,1977-1978 GMC K25 Suburban Sierra Classic
1975,1977-1978 GMC K25 Suburban Sierra Grande
1977-1978 GMC K35 Base
1977-1978 GMC K35 High Sierra
1977-1978 GMC K35 Sierra Classic
1977-1978 GMC K35 Sierra Grande
1975 GMC P15 Base
1975 GMC P15 Value Van
1975,1977-1978 GMC P25 Base
1975,1977-1978 GMC P25 Value Van
1975,1977-1978 GMC P35 Base
1975,1977-1978 GMC P35 Value Van
1975-1977 GMC Sprint Base
1975-1977 GMC Sprint Classic
1975 GMC Sprint High Sierra
1976 GMC Sprint Sierra Madre Del Sur
1975-1976 GMC Sprint SP
1975 Oldsmobile Cutlass Base
1975 Oldsmobile Cutlass S
1975 Oldsmobile Cutlass Supreme Base
1975 Oldsmobile Omega Base
1975 Oldsmobile Omega Salon
1975 Pontiac Firebird Base
1975 Pontiac Firebird Esprit
1975 Pontiac Grand LeMans Base
1975 Pontiac LeMans Base
1975 Pontiac LeMans Sport
1975 Pontiac Ventura Base
1975 Pontiac Ventura Custom
1975 Pontiac Ventura S
1975 Pontiac Ventura SJ

Shipping & Delivery

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations. For international orders, please Contact Us. If you select US shipping rates and are shipping internationally, please be advised you will be contacted to compensate the difference in shipping fees.

Processing takes about 3 to 5 business days before your order ships. We do not process or ship orders on weekends. If you order an item that's on backorder, we will reach out with an estimated arrival time. If you have any questions about shipping make sure to email us at sales@onlinetsm.com or call our reps today at 732-638-5268.

If by any chance, your package that has been delivered by the carrier is lost/stolen, YOU (THE BUYER) are responsible for working with the carrier and us, Tri-State Motorsports to recover your package. You must contact us and the shipping company within 48 hours of delivery for lost/damage claims. You are covered by the basic insurance amount APPROVED by the shipping center. We DO NOT refund or reship product for claims that are denied by the shipping company.

FAQs

When will my product ship out?

Processing takes about 3 to 5 days before your order ships. Some orders may take longer than usual to process and ship. If you order an item that's on backorder, we will reach out with an estimated arrival time. Refunds are subject to a 20% restocking fee. Cancellations are subject to 10% cancellation/processing fee under no exceptions.

What's the Warranty on our products?

Unless the product is manufactured by Tri-State Motorsports or TSM Race, ALL Warranties go through the Manufacturer directly. Please visit their official website and get in contact with them in regards to your warranty. We will supply you with any invoice or tracking information the manufacturer asks you for.

Do you offer any promotions?

One of our major promotions is the TSM Bucks Loyalty Program. You will earn 1 TSM point for every dollar you spend with us. These points can be redeemed for rewards when you reach certain thresholds. 

TSM Bucks Info

If you subscribe to marketing emails, you will be given a discount code for 5% off your order that you can use at any time. Our Instagram page also has a variety of weekly promotions in our stories and posts. Some restrictions may apply depending on MAP policies.

What payment methods are accepted?

Tri-State Motorsports accepts American Express, Discover, Mastercard, and Visa. You can also pay over time with Affirm and Klarna. Express checkout methods include:

  • Apple Pay
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  • PayPal
  • Shop Pay
  • Venmo

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Learn More On Affirm

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