Installation Time
(approx) 2 Hours
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
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Nostrum High Performance Gen 3 Coyote High Pressure Fuel Pump Kit (18-23 Mustang GT)Find parts that fit my vehicle
Item 439813
Our Price
$2,575.00 kit
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$128.75 Available in AM Cash Rewards.
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Product Information
Features, Description, Q&A, Specs & Installation
Features
- Turn retainment clips clockwise to remove them from the cowl cover over the battery.
- Remove the cowl cover.
- Use a 10mm socket to disconnect the negative battery terminal.
- Use a towel to separate the terminal from the battery.
- Disconnect the pump solenoid connector by pulling out the red tab and squeezing it to release.
- Use a 12mm socket to remove the single bolt holding the crash bracket in place.
- Remove the crash bracket from the engine bay.
- Pull off the sound damping foam from around the high-pressure fuel pump.
- Push the white tab out of the low-pressure fitting on the fuel pump.
- Disengage tab with slight pressure using a pick or flathead screwdriver.
- Once the white tab is pushed out of the fitting, the line can be disconnected from the pump.
- Use a 17mm wrench to remove the nut of the pump side of the fuel line.
- Use a 10mm socket to remove the bolts retaining the pump to the cylinder head.
- Pull the pump out of its housing and remove it from the engine bay.
- Disconnect the 3 vacuum hoses connected to the air intake pipe and intake manifold.
- Push on black retainment clip to release fitting.
- Unclip the green clip on the tank vent solenoid connector to release it from its fittings.
- Pull the connector free from its fitting.
- Disconnect the connector for the crankcase vent tube.
- Pull the grey tab towards the front of the engine to disengage.
- Use a 7mm socket to loosen the hose clamp over the intake tube connected to the throttle body.
- Pull the intake tube out of the throttle body to disconnect it from the throttle body and intake manifold.
- Disconnect the throttle body electrical connector.
- Remove the bolts holding the heater hose supports in place using a 10mm socket. Torque spec: 7 Nm.
- Disconnect the intake fuel line on the driver side of the intake.
- Squeeze both sides of the green tabs.
- Push through the housing to release the clip from the fitting.
- Pull the heater hose away from the port injector rail to gain access to the sound dampening foam.
- Pull the evaporative emission tank purge solenoid from its metal clip on the driver side heater hose support.
- Remove the fuel rail insulators from either side of the fuel rail.
- Disconnect the injector solenoid electrical connectors on all 8 injectors on both sides of the port injection rail.
- Remove the bolts holding the fuel rail in place using a 10mm socket. Torque spec: 10 Nm + 90°.
- Disconnect the fuel rail pressure sensor.
- Pull the fuel rail out of the engine bay.
- Disconnect the 6 manifold bolts using an 8mm socket. Torque spec: 11.5 Nm + 35°.
- Disconnect the blue wire harness electrical connectors located at the back of the intake manifold.
- Disconnect the black wire harness electrical connector at the back of the intake manifold next to the blue connector.
- Disconnect the lower black wire harness connector at the back of the intake manifold.
- Disconnect the wire harness clips at the back of the manifold using a trim removal tool.
- Use a 17mm wrench to disconnect the compression nut on the rail side of the high-pressure fuel line.
- Place an absorbent towel around the fitting to prevent fuel from spraying out when the line is disconnected from the rail.
- Use a trim removal tool to remove the 3 wire harness retainers from the high-pressure fuel line shield.
- Remove the 2 retainment bolts and 1 nut holding the fuel line shield in place using a 10mm socket.
- Use 8mm and 13mm sockets to remove the bolts holding the brackets securing the fuel line.
- Pull the fuel line out of the engine bay.
- Place the Nostrum pump flange on the fuel pump head on the cylinder head.
- Place the flange alignment tool in the center of the flange to align it with the seated position of the fuel pump.
- Use a 10mm socket to tighten the nuts to secure the flange to the pump head. Torque spec: 10 Nm + 30°.
- Use a 5mm Allen wrench or socket to secure the Nostrum pump to the flange. Torque spec: 14 Nm.
- Seat the globe fitting for the HP fuel in the fuel rail’s fitting.
- Partially thread the compression nut on using an 18mm wrench.
- Ensure that the fuel line and the fuel rail fitting are concentric before torquing down their compression nuts.
- Hand tighten the compression nut on the pump side of the line.
- Using a 13mm socket or wrench, secure the OEM bolt/stud over the Nostrum fuel line bracket closest to the fuel rail. Torque spec: 10 Nm + 30°.
- Using an 18mm crow’s foot, torque each compression nut on each end of the fuel line to a torque spec of 45 Nm.
- Use a trim removal tool to remove the clip holding the wire harness to the stud on the back of the passenger side cylinder head.
- Place the included Nostrum bracket over the stud with the bent end facing the firewall.
- Tighten the included nut using a 10mm socket.
- Reinstall the 2 retainment bolts and 1 nut holding the fuel line shield in place using a 10mm socket. Torque spec: 10 Nm.
- Plug in the Nostrum electrical adapter into the connector previously used for the stock fuel pump.
- Plug the adapter into the Nostrum fuel pump’s solenoid electrical connector.
- Repeat reassembly steps in reverse to install the low-pressure line to the pump.
- Plug the stock low-pressure fuel line female quick connect into the male QC on the Nostrum fuel pump.
- Continue reassembling the vehicle by repeating removal steps in reverse.
- Do not start vehicle until calibration is completed as per Nostrum tuning guide.
- After installation, key cycle to “Accessory On” to pressurize low-pressure side and check for leaks.
- Perform start attempts to evacuate air from fuel system while checking for leaks.
- Let car idle and recheck for leaks on both low and high-pressure portions.
- Check for fuel leaks after driving and cooling for extended period due to thermal expansion.
- Retighten fittings if necessary.
- Fits 2018–2023 Mustang GT.
Description
HIGH-PERFORMANCE FUEL PUMP. The Nostrum High Performance Gen 3 Coyote High Pressure Fuel Pump Kit is engineered to deliver enhanced fuel flow and pressure necessary for high-output applications in your Mustang. It replaces the OEM pump to support increased horsepower demands and ensures consistent fuel delivery for optimal engine performance and reliability.
CONSTRUCTION AND APPEARANCE. Constructed with premium materials and precision manufacturing, this high-pressure fuel pump features a durable flange and robust fittings designed for longevity and a professional, clean installation that integrates seamlessly with the engine bay components.
INSTALLATION. Installation requires moderate mechanical skill and basic hand tools, with no drilling necessary. Detailed instructions provide an organized process including proper torque specifications and necessary calibration steps for safe and effective operation.
APPLICATION. Designed specifically to fit the 2018 through 2023 Mustang GT, ensuring compatibility with stock and modified fuel systems in this vehicle range.
Nostrum High Performance H086-1438
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Fuel Pump Kit
Questions & Answers
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Will It Fit My Mustang
- Bullitt - 19, 20
- GT - 18, 19, 20, 21, 22, 23
- Mach 1 - 21, 22, 23
