800-227-2242
My Garage Add a vehicle

Recent vehicles

Vehicles you shop for show up here. Pick one in the Shop By Vehicle bar below.

Cart
Reset

Red Super Conductor Ford 351M-400, HEI

Mfg Part #
31339
NP#
MSD31339
Brand
MSD

Fits 1972 to 1982 Ford Bronco, Custom 500, E-100 Econoline and 12 more models; 1977 to 1979 Lincoln Continental, Mark V; 1977 to 1979 Mercury Cougar, Grand Marquis, Marquis. See every vehicle

  • Wires are precut to exact specifications
  • Custom fit for make and model listed.
  • Bolt-on performance
$320.99 CAD Ships tomorrow
Free shipping in Canada, ships tomorrow
Availability: This product is in one of our warehouses.

Does this fit your vehicle?

Description

Engineered from the inside out, the 8.5 offers everything you have ever wanted in a wire, incredibly low resistance without electronic interference! In a single 12 inch length of Super Conductor Wire there is only 40 - 50 ohms of resistance! That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it's great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference (EMI) "choke". This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. The MSD's 8.5mm spark plug terminals feature Dual Crimp terminals. As the name implies, the terminals feature two crimps, one for the sleeve of the wire and another separate crimp to grasp the conductor. The MSD's 8.5mm spark plug terminals feature Dual Crimp terminals. As the name implies, the terminals feature two crimps, one for the sleeve of the wire and another separate crimp to grasp the conductor.

Warranty: Manufacturer's Limited 1 Year Warranty

Fits these vehicles

YearMakeModelSubmodelEngine
1978FordBroncoCustom, Northland, Ranger XLT5.8L 351 V8, 6.6L 400 V8
1979FordBroncoCustom, Ranger XLT5.8L 351 V8, 6.6L 400 V8
1980 - 1981FordBroncoCustom, Ranger XLT5.8L 351 V8
1977FordCustom 500Base, Ranch Wagon5.8L 351 V8, 6.6L 400 V8
1980FordE-100 EconolineBase, Chateau, Custom6.6L 400 V8
1980FordE-250 EconolineBase, Chateau, Custom5.8L 351 V8, 6.6L 400 V8
1981FordE-250 EconolineBase, Chateau, Custom5.8L 351 V8
1980 - 1981FordE-250 Econoline Club WagonBase, Chateau, Custom5.8L 351 V8, 6.6L 400 V8
1982FordE-250 Econoline Club WagonBase, Chateau, Custom6.6L 400 V8
1980 - 1981FordE-350 EconolineBase, Chateau, Custom5.8L 351 V8, 6.6L 400 V8
1982FordE-350 EconolineBase, Chateau, Custom6.6L 400 V8
1980 - 1981FordE-350 Econoline Club WagonBase, Chateau, Custom5.8L 351 V8, 6.6L 400 V8
1982FordE-350 Econoline Club WagonBase, Chateau, Custom6.6L 400 V8
1977FordF-100Base, Custom, Northland, Ranger, Ranger XLT, XLT5.8L 351 V8, 6.6L 400 V8
1978FordF-100Base, Custom, Northland, Ranger, Ranger Lariat, Ranger XLT5.8L 351 V8, 6.6L 400 V8
1979FordF-100Custom, Ranger, Ranger Lariat, Ranger XLT5.8L 351 V8, 6.6L 400 V8
1981FordF-100Custom, Ranger, Ranger Lariat, Ranger XLT5.0L 302 V8
1977FordF-150Base, Custom, Northland, Ranger, Ranger XLT, XLT5.8L 351 V8, 6.6L 400 V8
1978FordF-150Base, Custom, Northland, Ranger, Ranger Lariat, Ranger XLT5.8L 351 V8, 6.6L 400 V8
1979FordF-150Custom, Ranger, Ranger Lariat, Ranger XLT5.8L 351 V8, 6.6L 400 V8
1980 - 1981FordF-150Custom, Ranger, Ranger Lariat, Ranger XLT5.8L 351 V8
1977FordF-250Base, Custom, Northland, Ranger, Ranger XLT, XLT5.8L 351 V8, 6.6L 400 V8
1978FordF-250Base, Custom, Northland, Ranger, Ranger Lariat, Ranger XLT5.8L 351 V8, 6.6L 400 V8
1979 - 1981FordF-250Custom, Ranger, Ranger Lariat, Ranger XLT5.8L 351 V8, 6.6L 400 V8
1982FordF-250Custom, XL, XLS, XLT Lariat6.6L 400 V8
1977FordF-350Base, Custom, Northland, Ranger, Ranger XLT, XLT5.8L 351 V8, 6.6L 400 V8
1978FordF-350Base, Custom, Northland, Ranger, Ranger Lariat, Ranger XLT5.8L 351 V8, 6.6L 400 V8
1979 - 1981FordF-350Custom, Ranger, Ranger Lariat, Ranger XLT5.8L 351 V8, 6.6L 400 V8
1982FordF-350Custom, XL, XLS, XLT Lariat6.6L 400 V8
1977 - 1978FordLTDBase, Country Squire, Landau5.8L 351 V8, 6.6L 400 V8
1977FordLTD IIBase, Brougham, S, Squire5.8L 351 V8, 6.6L 400 V8
1978FordLTD IIBase, Brougham, S5.8L 351 V8, 6.6L 400 V8
1979FordLTD IIBase, Landau, S5.8L 351 V8
1972 - 1973FordRancheroGT6.6L 400 V8
1977 - 1978FordRanchero500, GT, Squire5.8L 351 V8, 6.6L 400 V8
1979FordRanchero500, GT, Squire5.8L 351 V8
1977FordThunderbirdBase5.8L 351 V8, 6.6L 400 V8
1978FordThunderbirdBase, Diamond Jubilee, Town Landau5.8L 351 V8, 6.6L 400 V8
1979FordThunderbirdBase, Heritage, Town Landau5.8L 351 V8
1977 - 1979LincolnContinentalBase6.6L 400 V8
1977 - 1979LincolnMark VBase6.6L 400 V8
1977MercuryCougarBase, Brougham, Villager, XR-75.8L 351 V8, 6.6L 400 V8
1978MercuryCougarBase, XR-75.8L 351 V8, 6.6L 400 V8
1979MercuryCougarBase, XR-75.8L 351 V8
1977MercuryGrand MarquisBase6.6L 400 V8
1978MercuryGrand MarquisBase5.8L 351 V8, 6.6L 400 V8
1977MercuryMarquisBase, Brougham6.6L 400 V8
1978MercuryMarquisBase, Brougham5.8L 351 V8, 6.6L 400 V8

Sign up for sales, arrivals, vehicle specific content and more.