Name: Autolite AR51 Autolite AR51 High Performance Racing Non-Resistor Spark Plug
SKU: ar51
Price: 5.49 USD
Availability: InStock

AUTOLITE AR51 Part Description

Autolite AR51 High Performance Racing Non-Resistor Spark Plug

Yttrium-Enhanced Alloy enables up to 8% reduction in sidewire temperature for colder heat ranges designed to enable performance modifications and handle intense conditions.*
Engineered with a cut-back ground electrode that delivers optimal ignitability of the flame kernel and better heat transfer, leading to quicker starts.
Cut back ground electrode for better ignitability of the flame kernel
The yttrium-enhanced alloy enables up to 8% reduction in ground wire temperature for colder heat ranges designed to enable performance modifications and handle intense conditions.
Anti-corrosive nickel plating to prevent rusting better than black oxide
Designed with an anti-corrosive nickel-plating prevents rusting better than black oxide, allowing the plug to maintain its durability and efficiency.
Its high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength while preventing flash-over.

AUTOLITE AR51 Specifications

Resistance	1 82
Ground Electrode Tip Design	Standard
Ground Electrode Core Material	Nickel
Electrical Terminal Type	Non-Removable Nut
Center Electrode Core Material	Copper
Center Electrode Tip Material	Nickel
Pre-Gap Size	0.025 IN
Ground Electrode Quantity	1
Hex Size	21 MM
Seat Type	Flat
Reach	0.75 IN
Thread Diameter	14 MM
Insulator Material	Ceramic
Resistor Type	No
Ground Electrode Tip Material	Nickel
Center Electrode Design	Standard
Center Electrode Projection	Mid Projection
Washer(s) Included	Yes
Grade Type	Performance
Hex Size	13/16 IN
Manufacturer Heat Range	12
Skirt	Yes
Hex Type	Hex
Indexed	No
Reach	19.049999999999997 MM
Pre-Gap Size	0.635 MM

Country of Origin (Primary)	MX
Harmonized Tariff Code (Schedule B)	8511100000
Warranty Special	No Warranty
Warranty Special UOM	TX
Harmonized Tariff Code (HTS)	8511100000
UPC	00009100017727
UNSPSC	26101732

Brand	Part Number
Champion Spark Plug	315, N6YC, RN4YC, RN6YC
DENSO Auto Parts	3274, W24EP-U, W24EPR-U
Motorcraft	AG092C, AG902, AG902C
NGK	2037, BP8ES, BP8ES SOLID, BP8EVX, BPR8EIX, BPR8ES, BPR8EVX, R5672-8, R5672-9, R5672A-9
ACDelco	41XLS, 436XLS, 438XLS, R41CXLS
Bosch	W3DP0, W4DP0
Splitfire - Archived	TP6A
ACCEL	111, 112
Beru	14 R-5 DU, 14-5 DTU, 14-5 DU, 14-5 DUO, UX 56

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)

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