Name: Autolite AR51 High Performance Racing Non-Resistor Spark Plug
SKU: ar51
Price: 4.33 USD
Availability: InStock

AUTOLITE part description

Heat Range Chart Location:See Racing Section
Hex:13/16"
Reach:3/4"
Resistor/Non-Resistor/Suppressor:Non Resistor
Seat:Gasket
Thread Diameter:14MM
Tip:Power
Principal Applications:CHRYSLER HEMI, CHEVROLET BIG BLOCK, FORD HEMI (Racing)

Product Description

Autolite AR51 High Performance Racing Non-Resistor Spark Plug

Application Summary

Alfa Romeo Duetto 1600 (1967), Alfa Romeo Giulia Sprint (1963-1964), Alfa Romeo Giulia Sprint (1967-1968), Alfa Romeo Giulietta (1959-1961), Ferrari 250 LM (1964-1965), Ferrari 275 GT (1968), Ferrari 275 GTB (1964-1968), Ferrari 275 GTS (1964-1968), Ferrari 275 LM (1964-1965), Ferrari 330 GT (1964-1968), Ferrari 330 GTC (1966-1968), Ferrari 330 GTS (1966-1968), Ferrari 365 GT (1967-1971), Ferrari 365 GT4 (1972-1976), Ferrari 365 GT4 BB (1974), Ferrari 365 GTB/4 (1968-1974), Ferrari 365 GTC (1968-1970), Ferrari 365 GTC/4 (1971-1972), Ferrari 365 GTS (1968-1970), Ferrari 365 GTS/4 (1970-1974), Ferrari 400 Superamerica (1960-1966), Fiat 124 (1970-1973), Fiat 125 (1961-1967), Fiat 1500 (1965-1967), Porsche 911 (1965), Porsche 911 (1982-1989), Porsche 911 (1991-1992), Porsche Carrera (1960-1964)

Features & Benefits

Yttrium-Enhanced Alloy enables up to 8% reduction in sidewire temperature for colder heat ranges designed to enable performance modifications and handle intense conditions.*
Cut back ground electrode for better ignitability of the flame kernel
Anti-corrosive nickel plating to prevent rusting better than black oxide

Spark, plug, spark plug, Racing Plug, high performance, Autolite

Product Attributes

Resistance	1 82
Ground Electrode Tip Design	Tapered
Ground Electrode Core Material	Nickel
Electrical Terminal Type	Stud
Center Electrode Core Material	Copper
Center Electrode Tip Material	Nickel
Pre-Gap Size	0.025 IN
Pre-Gap Size	0.6 MM
Ground Electrode Quantity	1
Hex Size	13/16 IN
Hex Size	21 MM
Seat Type	Flat
Reach	0.75 IN
Reach	19.5 MM
Thread Diameter	14 MM
Insulator Material	Ceramic
Resistor Type	No
Ground Electrode Tip Material	Nickel
9608	Standard
9805	Mid Projection

Additional Information

Country of Origin (Primary)	MX
Harmonized Tariff Code (Schedule B)	8511100000
Warranty Special	See Rep
Warranty Special UOM	SR
UPC	00009100017727
UNSPSC	26101732

Part Interchanges

AUTOLITE AR51 Cross Reference

We have 65 alternatives for the AR51 by AUTOLITE:

Fits Vehicles

Fiat 125 (1961-1967)
Alfa Romeo Giulietta (1959-1961)
Ferrari 250 LM (1964-1965)
Ferrari 400 Superamerica (1960-1966)
Ferrari 275 LM (1964-1965)
Ferrari 275 GTS (1964-1968)
Porsche Carrera (1960-1964)
Fiat 1500 (1965-1967)
Fiat 124 (1970-1973)
Ferrari 365 GTS/4 (1970-1974)
Ferrari 365 GTS (1968-1970)
Ferrari 365 GTC/4 (1971-1972)
Ferrari 330 GTC (1966-1968)
Ferrari 365 GTC (1968-1970)
Ferrari 365 GTB/4 (1968-1974)
Ferrari 365 GT4 BB (1974)
Ferrari 365 GT (1967-1971)
Ferrari 330 GTS (1966-1968)
Ferrari 330 GT (1964-1968)
Ferrari 275 GTB (1964-1968)
Ferrari 275 GT (1968)
Alfa Romeo Duetto 1600 (1967)
Alfa Romeo Giulia Sprint (1963-1964, 1967-1968)
Ferrari 365 GT4 (1972-1976)
Porsche 911 (1965, 1982-1989, 1991-1992)

Autolite® allows you to go anywhere—without delay—with its comprehensive spark plugs offerings. Although it was initially established as a buggy lamp manufacturer in 1911, it slowly gained recognition as an ignition expert when it developed and introduced the very first Autolite spark plug in 1935. Over the years, the company has reached greater heights, producing and supplying spark plugs and other ignition parts to some of the major automotive manufacturers, such as Chrysler, Studebaker, Willys, and Packard. Headquartered in Lake Forest, Illinois, Autolite is a proud member of the FRAM Group, North America's largest and most diversified group servicing the vehicle replacement parts market.