NGK R5671A-8 Spark Plug for Sprint 305 Racing Engines

#9104554

NGK R5671A-8 Spark Plug for Sprint 305 Racing Engines

Name: NGK R5671A-8 Spark Plug for Sprint 305 Racing Engines
Brand: NGK
SKU: 9104554
Price: 7.49 USD
Availability: InStock
Rating: 5 (3 reviews)

3 Reviews

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For aluminum heads flat seat 14mm .708 reach
Spark plug seat and taper both have a gasket
Designed specifically for sprint racing applications

Heat Range:

Warm(8) / Each

Colder (10) / Each Colder (10) / Set 8 Coldest (11) / Each Coldest (11) / Set 8 Warm-Cool (9) / Each Warm-Cool (9) / Set 8 Warm(8) / Set 8

$7.49

/each

In Stock

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Product Summary

Gasket Spark Plug Seat Style, Gasket Seat Taper

For aluminum heads flat seat 14mm .708 reach
Spark plug seat and taper both have a gasket
Designed specifically for sprint racing applications
Core is made from copper and the tip from nickel alloy
Engineered for high-revving, high-compression race crate engines

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Key Specs

MFG. Part #	R5671A-8
Brand	NGK
Thread Pitch	14mm

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Need To Know

Need help?

855.313.9176

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Quick and Easy Returns

Return Policy

NGK R5671A-8 Details

Every NGK spark plug is designed to withstand severe mechanical and thermal shock associated with these high-revving, high-compression race crate engines.

For aluminum heads flat seat 14mm .708 reach
Sprint racing applications
305 engines
Sold each

Application

Spark Plug Application Chart

Guides & Documents

Performance Spark Plug Buyer’s Guide

CA Prop 65

NGK R5671A-8 Specifications

KEY SPECS
MFG. Part #	R5671A-8
Brand	NGK
Thread Pitch	14mm

GENERAL
Spark Plug Seat Style	Gasket
Seat Taper	Gasket
Spark Plug Reach	0.75"
Resistor	No
Insulator Type	Non-projected
Spark Plug Heat Range	8
Core Material	Copper
Tip Material	Nickel Alloy
Wrench Size	5/8"
Sold in Quantity	Each
Notes	sold individually

Ratings & Reviews

3 Reviews

Overall Assessment

Customers commend the superior quality of our spark plugs, with notable application in track racing and high horsepower vehicles. The product performs exceptionally well in these challenging conditions, outshining competing products. Users specifically noted the spark plugs' suitability for a 363 Ford Windsor and a 550 horse small block running E85. However, they may not be fit for street engines. This assessment underlines the product's adaptability to extreme performance requirements.

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3 reviews

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NGK are good

5.0

2 years ago

Taverncustoms

Oregon

Verified

Been using NGK plugs for all types of engines. They do what you need

Would Recommend

Very good quality spark plugs. Prompt shipping.

5.0

5 years ago

Steve

New Zealand

Verified

I use these plugs in a track racing 363 Ford Windsor. They are too cold for a street engine.

Would Recommend

NGK spark plugs

5.0

7 years ago

Gunner

Kearney, ne

Verified

I use these plugs in my 550 horse small block that runs E85

Would Recommend

Showing 3 of 3 reviews

Fitment

1991-1993 Buick Roadmaster

Gen 1 L03 Small Block Chevy

1991-1992 Cadillac Brougham

1-Piece Rear Main 305 LB9

1987 Chevy Blazer

Gen 1 L03 Small Block Chevy

1976-1985 Chevy C10

Gen 1 LG3 Small Block Chevy

1986 Chevy C10

1-Piece Rear Main 305 LG4
Gen 1 LG3 Small Block Chevy

1976-1982 Chevy C10 Suburban

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy C10 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy C10 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1982-1987 Chevy C15

Gen 1 LE9 Small Block Chevy

1988 Chevy C15

Gen 1 L03 Small Block Chevy

1988-1995 Chevy C1500

Gen 1 L03 Small Block Chevy

1996 Chevy C1500

Gen 1 L03 Small Block Chevy
Vortec L30 Small Block Chevy

1997-1999 Chevy C1500

Vortec L30 Small Block Chevy

1977-1982 Chevy C20

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy C20

2-Piece Rear Main 305 LG4

1986 Chevy C20

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1987 Chevy C20

Gen 1 L03 Small Block Chevy

1976-1978 Chevy C20 Suburban

Gen 1 LG3 Small Block Chevy

1979-1985 Chevy C20 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy C20 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1988-1995 Chevy C2500

Gen 1 L03 Small Block Chevy

1996 Chevy C2500

Gen 1 L03 Small Block Chevy
Vortec L30 Small Block Chevy

1997-1998 Chevy C2500

Vortec L30 Small Block Chevy

1978-1979 Chevy C30

Gen 1 LG3 Small Block Chevy

1986 Chevy C30

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1976-1982 Chevy Camaro

Gen 1 LG3 Small Block Chevy

1983-1984 Chevy Camaro

2-Piece Rear Main 305 LG4

1985 Chevy Camaro

2-Piece Rear Main 305 LB9
2-Piece Rear Main 305 LG4
Gen 1 L69 Small Block Chevy

1986 Chevy Camaro

1-Piece Rear Main 305 LB9
2-Piece Rear Main 305 LG4

1987-1992 Chevy Camaro

1-Piece Rear Main 305 LB9

1977 Chevy Caprice

Gen 1 LG3 Small Block Chevy

1978-1985 Chevy Caprice

2-Piece Rear Main 305 LG4

1986 Chevy Caprice

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1987-1993 Chevy Caprice

Gen 1 L03 Small Block Chevy

1980 Chevy Corvette

Gen 1 LG3 Small Block Chevy

1976-1982 Chevy El Camino

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy El Camino

2-Piece Rear Main 305 LG4

1986 Chevy El Camino

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1987 Chevy El Camino

Gen 1 L03 Small Block Chevy

1996-2002 Chevy Express 1500

Vortec L30 Small Block Chevy

1996-2002 Chevy Express 2500

Vortec L30 Small Block Chevy

1977-1982 Chevy G10

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy G10

2-Piece Rear Main 305 LG4

1986 Chevy G10

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1987-1995 Chevy G10

Gen 1 L03 Small Block Chevy

1977-1982 Chevy G20

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy G20

2-Piece Rear Main 305 LG4

1986 Chevy G20

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1987-1995 Chevy G20

Gen 1 L03 Small Block Chevy

1978-1979 Chevy G30

Gen 1 LG3 Small Block Chevy

1982 Chevy G30

Gen 1 LG3 Small Block Chevy

1985 Chevy G30

2-Piece Rear Main 305 LG4

1977-1982 Chevy Impala

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy Impala

2-Piece Rear Main 305 LG4

1977-1979 Chevy K10

Gen 1 LG3 Small Block Chevy

1981-1982 Chevy K10

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy K10

2-Piece Rear Main 305 LG4

1986 Chevy K10

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1976-1982 Chevy K10 Suburban

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy K10 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy K10 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1988-1995 Chevy K1500

Gen 1 L03 Small Block Chevy

1996-1999 Chevy K1500

Vortec L30 Small Block Chevy

1977-1978 Chevy K20

Gen 1 LG3 Small Block Chevy

1980 Chevy K20

Gen 1 LG3 Small Block Chevy

1985 Chevy K20

2-Piece Rear Main 305 LG4

1977-1978 Chevy K20 Suburban

Gen 1 LG3 Small Block Chevy

1985 Chevy K20 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy K20 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1988-1995 Chevy K2500

Gen 1 L03 Small Block Chevy

1997-1998 Chevy K2500

Vortec L30 Small Block Chevy

1977-1981 Chevy K5 Blazer

Gen 1 LG3 Small Block Chevy

1982-1985 Chevy K5 Blazer

2-Piece Rear Main 305 LG4

1986 Chevy K5 Blazer

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1976 Chevy Laguna

Gen 1 LG3 Small Block Chevy

1976-1982 Chevy Malibu

Gen 1 LG3 Small Block Chevy

1983 Chevy Malibu

2-Piece Rear Main 305 LG4

1976-1977 Chevy Monte Carlo

Gen 1 LG3 Small Block Chevy

1978-1985 Chevy Monte Carlo

2-Piece Rear Main 305 LG4

1986 Chevy Monte Carlo

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1987-1988 Chevy Monte Carlo

Gen 1 L03 Small Block Chevy

1976-1979 Chevy Monza

Gen 1 LG3 Small Block Chevy

1976-1979 Chevy Nova

Gen 1 LG3 Small Block Chevy

1987 Chevy R10

Gen 1 L03 Small Block Chevy

1987 Chevy R10 Suburban

Gen 1 L03 Small Block Chevy

1987 Chevy R20

Gen 1 L03 Small Block Chevy

1987 Chevy V10

Gen 1 L03 Small Block Chevy

1963-1965 GMC 1000 Series

Gen 1 LE9 Small Block Chevy

1970-1973 GMC Jimmy

Gen 1 LE9 Small Block Chevy

1978-1982 GMC Jimmy

Gen 1 LE9 Small Block Chevy

1987 GMC Jimmy

Gen 1 L03 Small Block Chevy

1960-1966 GMC Suburban

Gen 1 L69 Small Block Chevy

1975-1977 Oldsmobile Starfire

305 Chevy Small Block V8

1985 Pontiac Firebird

2-Piece Rear Main 305 LB9
2-Piece Rear Main 305 LG4
Gen 1 L69 Small Block Chevy