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Our intake manifolds are some of the highest quality replacements on the market!

This injection molded intake manifold with aluminum crossover is a new, aftermarket replacement part. It is a direct bolt on that is built to strict quality control standards.

The original intake manifold, due to the design, has an abnormal tendency to crack, leading to overheating and in many cases complete engine failure and/or damage to other parts of the car's engine. This new and improved intake manifold is designed to eliminate those problems!

This new upper intake kit has the following specifications:

  • Square port design
  • Reinforced aluminum coolant crossover - which means no repeat failure due to corrosion or vibration
  • Highly engineered reinforced plastic
  • Intake gaskets molded into the intake manifold
  • Replaces dealer part numbers: F6SZ 9424 AA,F8AZ 9424 AAA,F8AZ 9424 BAA,F8AZ 9424 BC,F8AZ 9424 CA,F6SZ9424AA,F8AZ9424AAA,F8AZ9424BAA,F8AZ9424BC,F8AZ9424CA

Kit includes:

  • Complete improved intake manifold with new aluminum crossover
  • New thermostat, thermostat o-ring, and screws
  • Bracket for installing alternator
  • Spacers to install original thermostat housing - making it not necessary to replace the hose and thermostat housing
  • Everything needed to do the job right the 1st time!!

Item Condition: New

WARNING: Cancer and Reproductive Harm -

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

Manifold Torque Sequence

  1. step : Relieving the Fuel Pressure (1:42)
    • Remove the truck lining
    • Pop up the red inertia switch button
    • Start the vehicle and let it run until it stalls
  2. step : Disconnecting the Battery (2:30)
    • Loosen the 8mm nut on the negative side of the terminal
    • Isolate the terminal away from the battery
  3. step : Removing the Air Intake (2:56)
    • Use an open drive on a 1/4 inch ratchet
    • Loosen the screw on the engine cover
    • Remove the engine cover
    • Disconnect the MAF sensor
    • Release the airbox clips
    • Lift up the cover
    • Disconnect the two breather hoses
    • Loosen and intake boot clamp
    • Remove the intake
  4. step : Removing the Serpentine Belt (3:55)
    • Familiarize yourself with the route of the serpentine belt
    • Insert the 3/8 inch drive ratchet into the tensioner
    • Turn the tensioner clockwise to loosen the belt
    • Pull the belt off the alternator
    • Release the tensioner
    • Pull the belt off by hand
  5. step : Removing the Alternator (4:50)
    • Pry up the alternator connector
    • Remove the 10mm power lead bolt
    • Remove the lead
    • Hand-tighten the 10mm back to the lead thread
    • Remove the four 10mm bolts from the alternator and its plate
    • Remove the metal plate
    • Loosen the two 10mm bolts from the bottom of the alternator
    • Remove the alternator
  6. step : Draining the Coolant (6:57)
    • Unscrew the radiator cap
    • Stick a hose into the coolant drain
    • Have a drain pan ready
    • Open the drain plug with a 19mm socket and ratchet
    • Hand-tighten the drain plug
  7. step : Removing the Temperature Sensor (8:02)
    • Collapse the upper radiator hose clamp
    • Slide it down the hose
    • Pry off the hose from the housing with channel lock pliers
    • Remove the two 10mm bolts from the housing
    • Remove the thermostat housing
    • Remove the thermostat
  8. step : Removing the Throttle Body Cables (9:45)
    • Rotate the arm on the throttle body
    • Pry off the wire from the slotted tab
    • Keep the arm down
    • Slide the end of the wire out of the notch
    • Release the tension
    • Unhook the spring
    • Remove the two 10mm bolts on top of the throttle cable retainer bracket
    • Pry the throttle cable out of the retainers in the heat shield
    • Remove the coolant feed line from the throttle body de-icer
    • Remove the vacuum line from the throttle body
  9. step : Disconnecting the EGR Tube (12:34)
    • Remove the two 10mm bolts on the EGR tube heatshield
    • Place a paper towel beneath the EGR tube
    • Spray rust penetrant on the EGR tube
    • Loosen the nut on the valve
  10. step : Removing the Throttle Assembly (14:00)
    • Disconnect the connections on the EGR valve
    • Disconnect the vacuum ports on the front of the throttle body assembly
    • Disconnect the large breather hose next to the port
    • Disconnect the throttle position sensor wiring harness
    • Disconnect the idle air control connectors
    • Remove the five 8mm bolts securing the throttle assembly to the intake manifold
  11. step : Disconnecting the Fuel Rail (15:28)
    • Pop the safety tab off of the fuel rail inlet
    • Wear proper safety equipment
    • Slide a disconnect line tool into the fuel line
    • Pull the line out
  12. step : Removing the Fuel Rail (16:14)
    • Disconnect the coolant temp sensor
    • Disconnect the three pin connector at the end of the fuel rail
    • Disconnect the vacuum connections
    • Disconnect the fuel injector wiring harnesses
    • Disconnect the ignition coil wiring harnesses
    • Disconnect the ground clip
    • Remove the two 8mm bolt on the fuel rail
    • Remove the two 15mm bolts on the headshield (one atop the bracket and one under the harness)
    • Pop the alternator harness off of the bolt
    • Disconnect the fuel injector wiring harnesses
    • Disconnect the ignition coil wiring harnesses
    • Remove the two 8mm bolt on the fuel rail on the other side of the engine
    • Pop the injectors up and out of the intake manifold
    • Remove the fuel rail and injectors
  13. step : Removing the Intake Manifold (19:05)
    • Remove the 16mm bolt from the ignition coil
    • Remove all the ignition coils
    • Compress the coolant hose clamp at the back of the intake
    • Pull the hose out
    • Remove the remaining eight 10mm bolts from the intake manifold (5 on the passenger side; 3 on the driver side)
    • Carefully remove the intake manifold from the vehicle
  14. step : Cleaning the Intake Manifold Gasket Surface (23:00)
    • Insert paper towels into the inserts
    • Remove the old gaskets
    • Use brake cleaner and a paper towel off of the gasket surfaces
    • Remove the paper towels once the surface is clean
    • Wipe up any coolant or dirt or debris from the valley in the engine
  15. step : Installing the Intake Manifold (25:38)
    • Lay the new manifold into the sound deadening material
    • Lower the intake manifold into place
    • Tighten the eight 10mm bolts by hand to the intake manifold
    • Tighten the 10mm bolts to 18 foot-pounds or 25 newton-metres in the correct torque sequence
    • Remove the cap
    • Install the cooling line at the rear and compress the clamp
  16. step : Reinstalling the Fuel Rail (29:20)
    • Reinstall the ignition coils
    • Reinstall the fuel rail
    • Reinstall the 8mm fuel rail hold down screws
    • Connect the fuel injector wiring harnesses
    • Connect the ignition coil wiring harnesses
    • Connect the alternator retainer to the wire
    • Connect the vacuum modulator
    • Connect the coolant temp sensor connector
    • Insert the ground connection to the fuel rail stud
    • Connect the vacuum fitting
    • Connect the fuel supply line
    • Reingage the safety
  17. step : Switching Over Sensors to the New Intake Manifold (31:23)
    • Remove the coolant temp sensor from the old intake manifold
    • Clean the old dirt from the coolant temp sensor threads
    • Apply thread sealant onto the threads of the sensor
    • Install the sensor to the new manifold
    • Connect the wiring harness to the coolant temp sensor
    • Install the M8 Allen plug to the new manifold
  18. step : Reinstalling the Heatshield (33:06)
    • Line up the bolts to the heatshield
    • Reinstall the heatshield bracket on the driver side
    • Reconnect the wire harness to its bracket
    • Tighten the bolts to the heatshield
    • Torque the upper bolt to the 18 foot-pounds
  19. step : Reinstalling the Throttle Assembly (34:08)
    • Clean off the surface of the bottom of the throttle assembly
    • Insert the throttle assembly onto the top of the manifold
    • Reinstall the five 8mm screws to the assembly
    • Reinstall the EGR tube into the EGR valve with groove jaw pliers
    • Reinstall the EGR tube heatshield
    • Tighten the two 7mm screws to the heatshield
    • Reconnect the EGR valve connector
    • Press on the vacuum fittings
    • Connect the vacuum line
    • Connect the breather hose to the valve cover
    • Route the throttle/cruise control cables around and into their retainers
    • Reinstall the 10mm bolts to the retainer bracket
    • Open the throttle body by hand
    • Insert the pin and rotate the throttle cable into its channel
    • Snap the cruise control cable into place
    • Reinstall the return spring
    • Reconnect the breather hose
    • Reconnect the coolant de-icer hose
    • Reconnect the throttle position sensor harness
    • Reconnect the idle harness
  20. step : Reinstalling the Thermostat (37:27)
    • Lay the thermostat into place
    • Insert the housing into place
    • Tighten the two 8mm bolts to the housing
    • Torque the bolts to 18 foot-pounds
    • Reinstall the upper radiator hose to the thermostat housing
    • Set the clamp into place
  21. step : Reinstalling the Alternator (38:15)
    • Relocate the stud from the old manifold to the new one
    • Reinstall the alternator
    • Reinstall the top bracket and hand-tighten the screws
    • Fully tighten the top bracket bolts
    • Tighten the bottom bolts to the alternator
    • Reconnect the electrical connector
    • Reconnect the power leader and 10mm nut
  22. step : Reinstalling the Serpentine Belt (39:30)
    • Loop the belt around the crank pulley
    • Bring it around the water pump
    • Bring it over the belt tensioner
    • Bring it under the A/C Pulley
    • Bring it over the idler pulley
    • Bring it around the power steering pulley
    • Pull the tensioner clockwise with the 3/8 inch ratchet
    • Pull the belt over the alternator
    • Release the tensioner
  23. step : Reinstalling the Air Intake (40:48)
    • Install the intake boot onto the throttle body
    • Tighten the hose clamp with a flat blade screwdriver
    • Connect the breather hoses
    • Press the airbox lid into place
    • Clamp the air box
    • Connect the MAF sensor
    • Reinstall the engine cover
    • Tighten the screw on the cover with a 1/4" ratchet and extension
  24. step : Reconnect the Battery (41:58)
    • Reconnect the negative terminal
    • Tighten the terminal with a 5/16 or 8mm wrench
  25. step : Priming the Fuel Lines (42:12)
    • Press down on the red intertia switch button
    • Insert a funnel into the coolant reservoir
    • Fill the cooling system
    • With the cap off, turn the key to the run position
    • Allow the fuel pump to turn on and off
    • Repeat the cycle two more times
    • Start the vehicle
    • Set the vehicle to vent/heat on the lowest setting
    • Keep an eye on the coolant level
    • Add coolant as needed
    • Reinstall the cap once completed

Tools needed for replacement:

    General Tools

  • Jack Stands
  • Drain Pan
  • Wire Brush
  • Funnel
  • Floor Jack

  • Materials, Fluids, and Supplies

  • Rust Penetrant
  • Paper Towels
  • Anti-Seize Grease
  • Dust Mask
  • Safety Glasses
  • Gloves

  • Pliers, Cutters & misc Wrenches

  • Channel-Lock Pliers

  • Ratchets & Related

  • Torque Wrench
  • Socket Extensions
  • 3/8 Inch Drive Ratchet
  • 1/4 Inch Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • Complete Metric Socket Set

  • Specialty Tools

  • Fuel Line Disconnect Tool

  • Wrenches - Metric

  • Complete Metric Wrench Set

5.00/ 5.0
9 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
The parts came properly packaged and everything was included as stated in the description. The part has been placed on my vehicle and we havent had any issues. I am satisfied.
March 2, 2017
Replacing Intake Manifold on a 2000 Grand Marquis
Had to replace the intake manifold on my year 200 Grand Marquis. Although Ive never "tackled" this kind of repair, was able to the job in 3 1/2 to 4 hours. This time did not include cleaning all of the gunk from the cylinder heads. Found the instruction easy to follow and am extremely satisfied. Price was great and delivery right on schedule. Will buy other products from 1AAUTO if need arises.
July 9, 2017
Thanks for the chance to give you my input on this product it was a perfect fit for my Lincoln Town car,it came with everything I needed and installation was easier than I thought it would be. The price was half what the local parts store charged and the car runs better than it ever did! Ill be a customer from now on for everything I need in the future. Thanks again 1A Auto.W.Milot
September 15, 2017
i got it on saterday
thank you for reshipping it to me i got the old one off but have not installed the new one yet bad weather here in denver. roger heckler classic auto and truck denver co
November 28, 2017
1AEIM00010-Intake Manifold
Excellent replacement part. no complaints. everything as advertized. Best price, quality, and installation instructions via Youtube!
February 3, 2018
Exact Fit
I purchased this part on Amazon by the Doorman company, but it was not an exact fit.However, this part fit perfect and was a breeze to install.
February 26, 2018
Replace the old 4.6 intake that was leaking st the thermostat and the aluminum elbow works great.
May 8, 2018
Kit worked out great much better than the factory original design. Everything needed to do the job correctly was included in the kit. Very happy cars running like it used to would recommend this kit to anyone that has the 4. 6 intake manifold leak.
August 24, 2018
The part arrived on time and was exactly what I needed. The video also assisted in the replacement of the part.
August 29, 2018
Will this fit my car? Add a vehicle to make sure
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
With this part do you need gaskets between the block and the manifold?
Travis D August 3, 2017
Yes you do need gaskets.
Edward R August 4, 2017
All of the gaskets are included, so you dont have to buy them separately. They are needed when you put the part in though (in case that was your question).
Matt S August 4, 2017
If you get it from A1 auto it comes with some gaskets in place as well as thermo stat an all.
William W August 5, 2017
No, It comes with everything, gaskets are molded in, New thermostat, and even an alternator bracket, The only thing that you have to buy is Antifreeze.
L I September 15, 2017
Your ad says it replaces a Dorman 615-178. Who manufactures this manifold? Thank you.
Charlie W March 6, 2018
We have a few different aftermarket companies build these parts specifically for us, as our 1A Auto house brand. They are manufactured to the same OEM specifications as the original part that came with your vehicle. If you have any further questions, please dont hesitate to ask.
Adam G March 6, 2018
I cant remember the manufacturer but it was an exact replacement for the 4.6L engine and installation was straightforward.
David R March 6, 2018
Can i buy the universal alternator bracket seperate?
Jason M August 10, 2018
The alternator bracket only comes with this kit and is not sold separately. If you have any other questions feel free to contact us and have a great day!
Corey M August 10, 2018
Year Make Model Description
1996-2000Ford Crown Victoria Ford Crown Victoria Intake Manifold V8 4.6L (8th Vin Digit W)
1996-2000Ford Crown Victoria Ford Crown Victoria Intake Manifold V8 4.6L (8th Vin Digit 9)
1996Ford Crown Victoria Ford Crown Victoria Intake Manifold V8 4.6L (8th Vin Digit 6)
1996-1998Ford Mustang Ford Mustang Intake Manifold V8 4.6L SOHC (8th Vin Digit X)
1996-1997Ford Thunderbird Ford Thunderbird Intake Manifold V8 4.6L (8th Vin Digit W)
1996-2000Lincoln Town Car Lincoln Town Car Intake Manifold V8 4.6L (8th Vin Digit W)
1996-1997Mercury Cougar Mercury Cougar Intake Manifold V8 4.6L (8th Vin Digit W)
1996Mercury Grand Marquis Mercury Grand Marquis Intake Manifold V8 4.6L (8th Vin Digit 6)
1996-2000Mercury Grand Marquis Mercury Grand Marquis Intake Manifold V8 4.6L (8th Vin Digit W)
Part #: 1AEIM00010

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

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How-to Video:

(43:47 min)