BMW G14 840i B58 3.0L Performance Parts & Upgrades

This harness is the perfect solution for ReFlex+ users who want a simple, reliable, and cost-effective plug-and-play option without compromising their vehicle's stock wiring. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

4865971

Mfg#:

201-0409

$213.99

This product was last offered at the strikethrough price on
01-22-2026

$199.99 USD

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CP-Carrillo Pistons by 5150 Autosport Standard Bore Heavy Duty Wrist Pins affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For B58 Engines With Stock 82mm Bore!

Brand:

ES#:

4752902

Mfg#:

CP-FPS-B58-XT-HD

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

4685673

Mfg#:

34208853554KT

$512.99 USD

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Choose your bottle size to add up to 150hp with this EFI nitrous kit. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

4044087

Mfg#:

NEX20421

Fine tune your stance and improve handling - Includes special bolts to mount these spacers to your BMW's wheel hubs. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:

ES#:

4159862

Mfg#:

5055664SW

$199.99 USD

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Lifetime Replacement

Prevent Dealerships From Re-Flashing Your Car Against Your Wishes! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Vehicles Produced After 1995

Brand:

ES#:

4766229

Mfg#:

VTT-OBD-LOCK

$97.99 USD

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Plug & play power — gain up to 60 horsepower on a stock car, 80+ horsepower on a modified car with a B58! Highest HP gains from Burger Motorsport! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Not for sale or use in the state of California.
For models with the earlier Gen1 B58 engine only

Brand:

ES#:

4023465

Mfg#:

JB4-B58

$599.00 USD

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on orders $49 and up

Lifetime Replacement

Fine tune your stance and improve handling affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:

ES#:

4065032

Mfg#:

3655664SW

$149.99 USD

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Lifetime Replacement

Build it once, and build it right! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

4362249

Mfg#:

201-5402

20% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$292.99

This product was last offered at the strikethrough price on
06-16-2026

$233.99 USD

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Lifetime Replacement

Flows up to 26% more than S58 inejctors and 60% more than B58 injectors affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with the Gen2 B58 (B58C / B58D) engine only - Not compatible with the earlier Gen1 B58A or Gen3 B58N engines

Brand:

ES#:

5434088

Mfg#:

201-0485

Two required per valve, necessary for use with certain supertech valves affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

2598482

Mfg#:

KPR-6S-7

$5.99

This product was last offered at the strikethrough price on
03-04-2026

$2.99 USD

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on orders $49 and up

Lifetime Replacement