• Reinforced aluminum coolant crossover - eliminates failure due to corrosion or vibration
  • Re-engineered reinforced plastic
  • Intake gaskets molded into the intake manifold
  • Not correct for models with coolant-heated PCV

Kit includes:

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

Item Condition: New

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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.

  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

4.8 / 5.0
28 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
good fit but the hardware sucked
About about 75% of the bolts I used to put the new manifold on my car and the bolts I used to install the intake assembly we're not the original because the original bolts were too long for the new assembly. I took the old intake manifold and stripped it of every bolt on it. The old intake assembly has very short bolts that hold the aluminum crossover in place I use those short bolts to bought my throttle body to the top I also use those bolts to attach my alternator. Very disappointed very disappointed that 1aauto did not supply me with the right Hardware but the God damn thing works it does not leak I made it function properly by bastardizing the old parts to get the replacement working and satisfied customer just be where you're going to strip every bolt off the old assembly
September 2, 2018
2 months ago
Response from 1A Auto
Thank you for your feedback. We are sorry to hear that you were unhappy with the part you received. We strive for 100% customer satisfaction and would like the opportunity to make this right for you.

Please feel free to contact us at 888-844-3393 so we can identify a suitable resolution for you. We hope to hear from you soon.
September 4, 2018
Jessica D
Good fit
The installation went like it should. Video and instructions are very helpfull
September 1, 2018
2 months ago
Better than oem
This manifold is great because it includes everything you need and the quality is great! Install is not too difficult. I definitely recommend this to others.
June 10, 2018
4 months ago
Excellent replacement part
This kit comes with everything needed to do the job, including the needed screws and miscellaneous other hardware. I would highly recommend this kit!
May 27, 2018
5 months ago
Happy costumer
The intake manifold i purchase from 1aauto fits great and the how to video was extremely helpful I have ordered auto parts from 1aauto in the past and been completely satisfied with service price availability and shipping would and do recommend 1aauto to everyone keep up the great work.
May 22, 2018
5 months ago
Your the greatest.
The part I received was exactly what I needed and the video of your mechanic installing this intake was by far, one of the best videos I have ever seen. The intake was top quality and shipping was very fast. I have to say again that I am floored on the time and detail of your video. Great work and thank you for caring enough to send this follow up after the order
May 18, 2018
5 months ago
Great service, outstanding price.
Ordering was a pleasant experience. The rep on the phone was courteous, professional and American. The part came fast and went in easy. The 1A how-to video library is top notch and extremely helpful. Back on the road fast, easy, and at a reasonable price. 1A Auto made it happen. We’ll be doing business again. Thanks guys!!
April 30, 2018
6 months ago
Excellent product, plus THANK YOU for making a video guide!
This was my first purchase from 1A auto. I had a cracked manifold on my '04 Crown Victoria, and the shop quoted me over $1500.00 to install a replacement, so I decided to take matters into my own hands. I have done some basic maintainence in the past, oil changes, brakes, shocks, but never anything like this. The YouTube video instructions that accompany this part were an enormous help. I was able to follow along step by step, and successfully install this part! I have been driving the Crown Vic every day for about 2 weeks now after the repair, and no more coolant leak! Thank you 1A!
April 27, 2018
6 months ago
How to video saved me $600
I couldn't afford to take my car to the mechanic.I was quoted over $ 750 to have new intake installed on my 2003 Grand Marquis.I was to afraid to tackle the job myself. But came across the install video from A-1. The video was so detailed I felt confidant I could dothe job.Bought the part+free shipping saved me money compared to Autozone. Replaced the intake in one day. Followed the video through the entire installation. It was a breeze. Awesome video Guys. Much appreciation for your detailed help. I'll be back!
April 6, 2018
6 months ago
I ordered the piece it was delivered ahead of projeected time! Watched the video from 1A and was simple and easy to help install item. Quality item fixed my problem and car is running fjne
March 19, 2018
7 months ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 7 questions Browse 7 questions and 27 answers
Can I purchase the aluminum crossover speperatley?
Steve S on Jan 14, 2016
BEST ANSWER: No I dont think you can. That is what the problem is from factory. The silver part used to be plastic over time it would crack. Got to replace whole manifold. Hope that info helps. Good luck. About a 6 hr job.
Will this fit a 1999 Ford Crown Victoria PI?
Justin L on Oct 29, 2017
BEST ANSWER: This part will not fit on a 1999 model. Please check out part number 1AEIM00010 for one that will fit your model!
Do I need to buy a gasket separately or does it come with it?
Cmarz on Dec 26, 2017
BEST ANSWER: I is a complete kit, the only issue is with the bypass plug on the back.
Replace it with a piece of heater hose and a solid plug and two good hose clamps.
How does the intake manifold compare to Dorman?
Bud Green on Jun 6, 2017
BEST ANSWER: The fit was great everything need for the installation was provided. Only took a couple hours to install
Do I need to use RTV or other gasket maker to install this manifold?
Manny on Aug 13, 2018
BEST ANSWER: The RTV or a gasket maker is not needed for the installation.
I have the heated pvc so this part will not work? Or dose it matter i have been told it wont.
Robert C on Jul 3, 2018
BEST ANSWER: This kit may work for you, but it may be missing required openings or fittings to function properly in your vehicle. It would be best to replace the part with one that is listed for your specific vehicle. Thank you!
Who is the manufacturer ?
john f on Apr 12, 2018
BEST ANSWER: 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 don't hesitate to ask.

Vehicle Fit

Year Make Model Description
2001-2005Ford Crown Victoria Ford Crown Victoria V8 4.6L (8th Vin Digit 9) Intake Manifold
2001-2008Ford Crown Victoria Ford Crown Victoria V8 4.6L (8th Vin Digit W) Intake Manifold
2006-2011Ford Crown Victoria Ford Crown Victoria V8 4.6L (8th Vin Digit V) Intake Manifold
2002Ford Explorer Ford Explorer V8 4.6L (8th Vin Digit W) Intake Manifold
1999-2004Ford Mustang Ford Mustang V8 4.6L (8th Vin Digit X) Intake Manifold
2001-2008Lincoln Town Car Lincoln Town Car V8 4.6L (8th Vin Digit W) Intake Manifold
2007-2011Lincoln Town Car Lincoln Town Car V8 4.6L (8th Vin Digit V) Intake Manifold
2001-2008Mercury Grand Marquis Mercury Grand Marquis V8 4.6L (8th Vin Digit W) Intake Manifold
2006-2011Mercury Grand Marquis Mercury Grand Marquis V8 4.6L (8th Vin Digit V) Intake Manifold
2002Mercury Mountaineer Mercury Mountaineer V8 4.6L (8th Vin Digit W) Intake Manifold

This part replaces:

  • Dorman 615-175
  • Hollander 329-01780
  • OE # 3W7Z9424AD
  • OE # 3W7Z9424AA
  • OE # 1W7Z9424AB
Part #: 1AEIM00012

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(43:47 min)