20-1180 Fuel Pump Hanger BMW E46
OVERVIEW
This Radium Engineering fuel hanger replaces both RH and LH fuel hat
assemblies. It is compatible with 1 or 2 aftermarket fuel pumps. The kit
reuses both passive side and active side fuel level sensors. It is also
keeps a true saddle tank crossover system using new improved
components. No cutting or modifying of the vehicle is required for
installation.
FITTINGS
The merged single pump outlet port is tapped for 10AN ORB (7/8"-14)
female threads on the top plate. An SAE quick-connect barb fitting is
provided to connect to the OEM feed line.
The fuel return inlet is tapped for 10AN ORB (7/8"-14) female threads
on the top plate. An 8.5mm barbed adapter is provided to connect to the
OEM return line.
All fittings are machined low enough to clear the surrounding area.
PUMP COMPATIBILITY
This hanger can be used with 1 or 2 aftermarket fuel pumps (sold
separately). These can be 2-wire brushed fuel pumps or 3-4 wire
brushless fuel pumps. Here are some popular fuel pumps that are
compatible with this fuel pump hanger:
(1)These pumps do not feature an integrated check valve. If a check valve is necessary, purchase 20-1534 (separately) to replace the fitting(s) under the fuel hat. FUEL STARVATION PROTECTION
Several mechanisms work together to move fuel into the integrated
collector bowl and keep it full at all times. This ensures the pump(s)
have adequate fuel available, even during aggressive driving. The
integrated fuel tank collector is supplied with fuel from 3 different
sources:
- The OEM collector bowl has a labyrinth. This keeps fuel from leaving the collector bowl when cornering.
- The constant low pressure returning fuel from the regulator
activates the venturi jet pump siphon and also fills the collector bowl.
- The crossover fuel scavenged from the passive side of the tank from
the venturi jet pump siphon is constantly filling the collector bowl.
PRV VENTURI JET PUMP
The OEM venturi jet pump is replaced with an innovative Radium Engineering variation.
The venturi jet pump has a built-in pressure relief valve to control
excessive fuel return flow. This is a common problem when using high
flow pump(s) at low loads. This excessive pressure would pop-off the OEM
venturi jet pump connection and prevent fuel transfer, ultimately
leaving the vehicle stranded. The PRV venturi jet pump also permits low
static fuel pressures.
ELECTRICAL
The custom designed stainless steel electrical studs easily handle
the high current demand that compact multi-pin bulkhead connectors lack.
They have an anti-rotation feature that prevents the terminals from
spinning when tightening the nuts. These serviceable connections are
hermetically sealed and impervious to all standard and exotic fuels.
Non-conductive anodized aluminum acorn nuts are provided to prevent any
accidental short circuiting. Furthermore, the in-tank wiring is
insulated with high quality chemically resistant ETFE.
NOTES
- Single pump installations can re-use the OEM fuel pump wiring.
- It is recommended to upgrade OEM wiring to ensure the single pump is receiving full power and operating at maximum potential.
- If using a second pump, a new dedicated relay and fuse pump MUST be used.
- Universal fuel pump wiring kits can be found HERE. Select one for each aftermarket pump.
FEATURES
- Drop-In Installation
- Aluminum and Stainless Construction
- PRV Venturi Jet Pump Siphon
- Merged 10AN ORB Female Pump-Out Port
- Compatible with Various Pumps
- Brushless Fuel Pump Capable
- Fuel Pump Filter Socks Included
- Capable of Running 1 or 2 Fuel Pumps
- Anti-Rotation Electrical Terminals
- High Current Electrical Hardware
- Gas, Methanol, and E85 Compliant
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