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Autolite 86 Copper Resistor Spark Plug
The Autolite Spark Plug is constructed as a copper resistor plug ideal for vintage powertrains and utility engines that encounter irregular operation and significant thermal variation. These systems rely on a plug capable of sustaining heat flow and electrical insulation under shifting conditions. Its high-alumina, multi-rib ceramic insulator increases dielectric strength and helps manage heat during prolonged combustion cycles. A single-piece terminal stud maintains a clear, consistent path for high-voltage transfer. At the core, a heat-fused glass composite seal encases the resistor element, creating a 100 percent leak-proof enclosure that simultaneously suppresses EMI to protect sensitive electronic components. Order the Autolite 86 now.
| Resistance | 4000 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 | 0.8636 MM |
| Ground Electrode Quantity | 1 |
| Hex Size | 21 MM |
| Seat Type | Flat |
| Reach | 9.4996 MM |
| Thread Diameter | 14 MM |
| Insulator Material | Ceramic |
| Resistor Type | Yes |
| Ground Electrode Tip Material | Nickel |
| Center Electrode Design | Standard |
| Center Electrode Projection | Mid Projection |
| Washer(s) Included | Yes |
| Grade Type | Regular |
| Pre-Gap Size | 0.034 IN |
| Hex Size | 13/16 IN |
| Manufacturer Heat Range | 7 |
| Reach | 0.374 IN |
| Skirt | Yes |
| Hex Type | Hex |
| Indexed | No |
| Hex Size (Inch) | 13/16 |
| Pre-Gap Size (Millimeter) | 0.9 |
| Thread Diameter (Millimeter) | 14 |
| Reach (Millimeter) | 9 |
| Resistance (Ohm) | 4000 |
| Country of Origin (Primary) | MX |
| Harmonized Tariff Code (Schedule B) | 8511100000 |
| Warranty Time | 2 |
| Warranty Time UOM | YR |
| Harmonized Tariff Code (HTS) | 8511100000 |
| UPC | 00009100000866 |
| UNSPSC | 26101732 |
| Brand | Part Number |
|---|---|
| Champion Spark Plug | 33, RJ14YC, RJ18YC |
| DENSO Auto Parts | 6006, W9P-U, W9PR-U |
| Motorcraft | A52, A82, AR82, AS52C, SP457 |
| NGK | 5858, BP4, BPR4S, XR4 |
| ACDelco | 45S, 46S, R45S, R46S, R47S |
| Bosch | WR10FC , WR10FC |
| ACCEL | 138, 498 |
| Caterpillar | 9M-4141 |
| Chrysler | 8129822, 8129828, 8129849, RJ14YC |
| General Motors | 05613872, 19301653, 5612390, 5613115, 5613564, 5613872, 5613879, 5613890 |
| Ford | 8U2J12405AGA |
| Atlas Spark Plugs | C61R |
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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.
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