Precision Raceworks for BMW 4 Series G22 (2021+)

BMW B58 / S58 Silver Billet Engine Fluid Cap Set is a high-quality upgrade that replaces the factory plastic caps with durable billet aluminum for enhanced strength and a sleek, premium appearance. Designed for a perfect fit, this cap set enhances both the aesthetics and functionality of your BMW’s engine bay.

Unlike adhesive overlays or plastic replacements, these billet aluminum caps completely replace the OEM components while retaining essential pressure relief functionality. The precision-machined silver finish offers a refined look while providing superior resistance to heat, corrosion, and wear.

• Direct replacement – Replaces OEM caps entirely for a factory-like fit
• Sleek silver finish – Provides a clean, high-end appearance
• Billet aluminum construction – Offers long-lasting durability and strength
• OEM pressure relief compatibility – Maintains proper system function
• Heat and corrosion-resistant – Engineered to withstand extreme conditions
• Easy installation – Requires transferring OEM pressure relief valves for full functionality

Upgrade your BMW’s engine bay with the BMW B58 / S58 Silver Billet Engine Fluid Cap Set, the perfect blend of style and performance for enthusiasts who demand the best.

The Precision Raceworks G8x/G2x Stand Alone Auxiliary Fuel System is the highest-performing and most stable low-pressure fuel system on the market! Forget about how things have been done and embrace the benefits of dedicated fueling for your port injection!

Since direct injection came out for BMW, enthusiasts have been adding port injection.  With this came the need to upgrade the low-pressure fuel system to keep up.  Historically this was done by increasing the output of the main fuel system.  Unfortunately, the main fuel pump is controlled using PWM by a factory programmed controller designed to reduce output when target fuel pressure (typically 5 bar) is exceeded, creating a constant battle when pumps are added or upgraded.  This limits upgraded fuel pumps from performing to their full potential.

Additionally, the high-pressure pump control system dumps fuel back into the low-pressure system at high pressure low volume resulting in oscillations of the low-pressure fuel system.  Because of this, the DI system in the car is required to constantly make corrections to keep target AFR in check.

With this stand-alone low-pressure fuel system dedicated to your port fueling that is a thing of the past!  Get rock-solid fuel pressures at any pressure, run fuel pressures that are 1:1 scalable to boost pressure, flow more fuel with dedicated lines, run smaller injectors and still get more fuel than you did with large injectors (allowing for higher resolution), put less demand on the car’s DI system to correct for fluctuations in pressure, even your tuner will be grateful as the system makes tuning of port fueling even easier and more accurate, the list of benefits goes on and on!

Features & Benefits

Billet Aluminum top hat with 3 high-flow fuel ports

Dedicated fuel pump(s) for port injection system

Optimal pump location resistant to fuel slosh under acceleration

Fully adjustable 1:1 scaling billet fuel pressure regulator

10-micron USA made Microglass fuel filter (Ideal for E85)

Smooth bore high flow PTFE fuel feed & return lines (AN6)

All billet connections for both fuel line fittings and top-hat

Plug and play connectors inside and outside* the top hat

Configurable pump activation harness (see instructions for more details)

Increased injector flow (when using 1:1 regulator feature vs static)

Compatible with all stock or upgraded primary fuel pumps

Easily expandable and upgrade-able for more fuel

All components and parts feature 100% Ethanol Compatibility

The AFS.460 dedicated auxiliary fuel system comes with all** necessary components to provide dedicated fuel system for port injection.  Featuring a single Walbro 535 (F9000295) fuel pump which flows 460LPH at 3 bar.

Pump flow 43.5 psi-a : 460 lph

Recommended base pressure: 43.5 psi-g

Maximum Fuel Pressure: 110 psi-g

Number of Fuel Output Ports: 2

Number of Fuel Return Ports: 1

Pump 1: Walbro 535 (F90000295)

Pump 2: N/A

Available (unused) Electrical Connections: 4*

Total System Weight: 11 lbs (including fuel lines and wiring harness)

*At time of install some wiring in the car may need to be cut and spliced to connectors included in this kit

**Male AN8-ORB to Female AN6-ORB adapter may be required for compatibility with some fuel rails (not included in kit)

BMW Washer Fluid Tank Cap - G2X G8X is a premium upgrade that enhances both the appearance and durability of your BMW’s engine bay. Designed as a direct replacement for the factory cap, this precision-engineered component eliminates the flimsy plastic construction and dull blue color, replacing it with a sleek, high-quality billet aluminum design.

Crafted for both style and functionality, this washer fluid cap ensures a secure fit while adding a refined, motorsport-inspired touch to your engine bay. Built to withstand extreme temperatures and chemical exposure, it provides long-lasting performance and a premium aesthetic upgrade.

• Direct replacement for OEM cap – Perfect fit with no modifications required
• High-quality billet aluminum construction – Stronger and more durable than factory plastic
• Enhanced engine bay aesthetics – Adds a sleek and stylish look
• Secure fit and easy installation – Snaps into place just like the original
• Resistant to heat and chemicals – Designed for long-term reliability
• Precision-machined design – Ensures proper function and a premium finish

Upgrade your BMW with a BMW Washer Fluid Tank Cap - G2X G8X, providing both superior durability and a refined appearance.