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Black 4 AWG battery cable with flattened lugs, 45 inches long

Road Power

Road Power industrial wire

SKU CH-BFMB-387PM

4 AWG battery cable with lugs, 45 in long, rated 400 A at 12 V and 140 °F

  • Product typeBattery, Switch To Starter
  • 400 A maximum current delivers strong starting power
  • 45 in length fits common battery-to-starter runs
  • 4 AWG copper conductor reduces voltage drop
  • PVC insulation resists water, grease, sunlight and abrasion
  • RoHS and SAE compliance meets recognised safety standards

4 AWG battery cable for engine starting

This 45-inch Road Power cable connects the battery to the starter on 12-volt systems. It carries up to 400 amperes through copper conductors terminated with flattened lugs. The black PVC insulation resists water, grease, sunlight and abrasion. Builders wiring a direct switch-to-starter link will find the length and gauge match common automotive layouts.

Sustained current handling at high temperature

The cable is rated for continuous operation at 140 degrees Fahrenheit while delivering its maximum 400-ampere capacity. Copper conductors and PVC insulation maintain flexibility and dielectric strength under prolonged engine-bay heat. Voltage drop stays predictable because the 4 AWG cross-section does not rely on short-burst derating. Installers can route the cable near exhaust manifolds without exceeding the temperature limit.

Lug termination and environmental resistance

Each end uses a flattened lug with a 5/16-inch stud hole for secure bolt-on connections. The PVC jacket meets RoHS and SAE SGT standards and shrugs off oil, coolant splash and UV exposure. Lugs crimped at the factory eliminate field termination errors that cause hot spots. The assembly ships ready to bolt between battery post and starter solenoid.

How it compares

Measured against everything we stock in Wire, Cable & Wiring Supplies, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 75% of the 1,610 comparable items (median $25.99).

Specifications

Product
Brand nameRoad Power
Product typeBattery, Switch To Starter

Questions about this item

How hot does the 4 AWG cable get when carrying 400 A all day?

The cable is rated for a maximum temperature of 140 Degrees F and its PVC insulation resists heat, water, grease, sunlight and abrasion.

What terminal size does the flattened lug need to bolt onto?

The lug has a 5/16 in stud size, so the mating terminal or battery post must accept that diameter.

Will this 45 in black cable work with my existing 12 V starter circuit?

Yes, it is built for 12 V maximum voltage and 400 A maximum current in switch-to-starter applications.

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