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(888) 312-8812 Login SignupAUTOLITE AR51 Autolite AR51 High Performance Racing Non-Resistor Spark Plug
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MSRP: $5.99
$498
Save $1.01
Limited availability at this price!
In Stock
Get it by Wednesday, Jun 10
AUTOLITE AR51 Part Description
Manufacturer
Product Description
Autolite AR51 High Performance Racing Non-Resistor Spark Plug
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.*
- 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
Product Attributes
| 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 |
| Thread Type Standard | Metric |
| Thread Size | M14 - 1.25 |
| Washer Type | Crush |
| Thread Diameter | 14 MM |
| Reach | 19 MM |
Additional Information
| 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 |
AUTOLITE AR51 Cross References
| Brand | Part Number |
|---|---|
| AC-DELCO | 41XLS, 436XLS, 438XLS, R41CXLS |
| ACCEL | 111, 112 |
| ACDelco | 41XLS, 436XLS, 438XLS, R41CXLS |
| BERU | 14 R-5 DU, 14-5 DTU, 14-5 DU, 14-5 DUO |
| BOSCH | W260T30, W280T30, W2D, W300T30, W3D, W3DP, W3DP0, W3DP2, W4DP, W4DP0, WR4DP0 |
| Beru | UX 56 |
| CHAMPION | 2339, 315, 339, 699, 904, N4YC, N61YD, N64Y, N6GY, N6Y, N6YC, N6YCX, RN4YC, RN6GY, RN6Y, RN6YC |
| Champion Spark Plug | 315, N6YC, RN4YC, RN6YC |
| DENSO | 3274, 4028, 4136, W248P-U, W24EP, W24EPR-U, W24EPR-ZU, W24EP-U, W24ES-GU |
| DENSO Auto Parts | 3274, W24EP-U, W24EPR-U |
| MOTORCRAFT | AG092C, AG902, AG902C |
| NGK | 2037, 2671, 2912, 3923, 3994, 6684, 6843, BP8ES, BP8EV, BP8EVX, BPR8EIX, BPR8ES, BPR8EVX, R5672-8, R5672-9, R5672A-9, BP8ES SOLID |
| NGK SPARK PLUGS | R6061-9, BPR8ES, R60619, 3923, 4074 |
| SPLITFIRE | TP6A |
| Splitfire - Archived | TP6A |
AUTOLITE AR51 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)
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