This high-quality extension harness eliminates the need for messy wire splicing or "hacking" into your vehicle's sensitive electrical system.
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BMW G14 840i B58 3.0L Engine Electrical Parts
- Alternator
- Battery
- ECU
- Fuse Panel
- Harness
- Ignition
- Pump
- Relays
- Sensors
- Starter
- Throttle Body
- Wire Covering
This kit allows you to maintain your factory Intake Air Temperature (IAT) readings while upgrading the pressure-sensing element to 72.5 PSI capacity.
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This harness is specifically engineered for BMW N54 owners who are upgrading to a front-facing intake manifold.
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Includes $629.20 refundable core charge
2.5mm & 25m(75ft) in length
A two-bank onboard battery charger rated at 20-amps (10-amps per bank) for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
07-19-2026
Purchase the wires you need for your electrical bulkhead fitting here. Featuring Black FEP wire pre-cut to 24" 12 Gauge wire with the appropriate terminal pre-crimped and ready to install!
Purchase the wires you need for your electrical bulkhead fitting here. Featuring Orange FEP wire pre-cut to 24" 12 Gauge wire with the appropriate terminal pre-crimped and ready to install!
Purchase the wires you need for your electrical bulkhead fitting here. Featuring Black FEP wire pre-cut to 24" 18 Gauge wire with the appropriate terminal pre-crimped and ready to install!
Purchase the wires you need for your electrical bulkhead fitting here. Featuring White FEP wire pre-cut to 24" 12 Gauge wire with the appropriate terminal pre-crimped and ready to install!
Purchase the wires you need for your electrical bulkhead fitting here. Featuring Blue FEP wire pre-cut to 24" 12 Gauge wire with the appropriate terminal pre-crimped and ready to install!
Purchase the wires you need for your electrical bulkhead fitting here. Featuring FEP wire pre-cut to 24" 12 Gauge wire with the appropriate terminal pre-crimped and ready to install!
Includes $629.20 refundable core charge
Includes $312 dollar refundable core cost
Upgraded High Pressure Pump for B58
Keep your engine operating in its optimal zone with a replacement Engine Oil Level Sensor from Febi Bilstein.
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