1986-95 Mustang BBK 3/8" Phenolic Spacer for GT-40 Intake Manifold 5.0 by BBK

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  • BBK  Mustang 3/8" Phenolic Spacer for GT-40 Intake Manifold (86-95) 5.0 1506
BBK  Mustang 3/8" Phenolic Spacer for GT-40 Intake Manifold (86-95) 5.0 1506

Increase airflow and clearance with this 1986-1995 Mustang intake spacer for GT40 intake manifold!

Item #BBK-1506
MPN# 1506

Everyday Low Price: $69.99

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  • Cooler, Denser Air In The Upper Intake
  • Raises Height Of Intake To Clear After-Market Valve Covers


  • CNC Machined Construction
  • Made Of Phenolic Material
  • Correct Length Hardware
  • Fits GT-40 Intakes

What's in the Box

  • (1) 3/8" Spacer
  • (2) Intake Gaskets
  • (4) 5/16 x 18 x 2” Bolts
  • (2) 5/16 x 18 x 6 ½” Bolts
  • (6) 5/16 AN Flat Washers.

Made in the USA

Product Description

GT40 3/8" Intake Spacer
As One Of The Most Affordable Bolt-Ons For Today’s Automotive Enthusiasts, BBK’s Phenolic Manifold Spacer Kits Have Proven To Be A Great Way To Increase Performance. CNC Machined From A Custom Phenolic Fiber 3/8" Thick Material, These Spacer Kits Increase Power By Reducing The Transfer Of Heat From The Lower To Upper Intake Manifold. This In-Turn Produces Lower Inlet Air Temperatures Which Results In Added Horsepower And The Ability To Add More Timing Advance With Less Detonation. Each Intake Manifold Spacer Kit model has been designed & Dyno Tested At The BBK Headquarters In Southern California To Maximize Performance At A Low Cost To The Customer.

Fitment Note
-Will work on Cobra intake but requires longer center intake bolts.
-Explorer intake will not accept the included hardware. You must source hardware from local hardware store.

-Fits 1986-1995 Mustang 5.0 w/ GT40 intake

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Customer Photos (4)

Product Reviews (7)

out of 5 stars
5 stars
7 reviews
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4 stars    1
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7 of 7 REVIEWS
7 of 7 REVIEWS

5 Stars   Fits explorer GT40 style intake just fine!
By on 3/31/2015
Just so you know, the kit comes with two long bolts and two short bolts, which replace the two short bolts on the ears of passenger side of intake and the long ones go on the ends of the tallest part of both ends of the intake, you will have to reuse your existing two long bolts from an old intake to go in the center two holes. I wanted to say that in case you have no bolts right now and are expecting this kit to provide you with all six. It's too easy to just hardware store it for the two bolts you need though so no big deal if you don't have it.

I have an explorer intake, later model with EGR in center, so this intake spacer fits fine. I also have a 1995 and this spacer just barely clears my stock hood. I have less than a millimeter clearance and if you press firmly down on center of my hood it does contact the highest point on the intake which is the front most bolt. You will have to remove the hood liner on 94-95's. Stock strut tower brace will not clear, if you are handy with a welder the stock brace is 1" steel tubing and easy to customize.

On 94-95 models you will need to adjust your EGR tube if you still run it. Mine was short by same distance as the spacer so I went and purchased a 1/2" section of steel tubing and just welded up a spacer inline with the tubing, this also gave me time to customize the bend of it so it was a lot easier to get on and off without forcing it like I used to have to with aftermarket headers. Alternatively you may be able to get the Edelbrock 1" EGR spacer sold by LRS, it might put you the other way and you have to remove some of the tubing though, I don't know for sure.
Another alternative would be possibly cutting the EGR tube, get a section of tubing with 1/2" inside diameter and then use that as a spacer and clamp it on to seal it. In emissions states that might be a red flag though so do your homework.

This spacer gave me much needed clearance for my valve covers, and makes a much easier time with small things such as trying to test fuel injectors with noid lights, because now you can just barely reach under the driver side plenum and reach an injector harness whereas stock you would have to be super tiny hands toddler sized.

Be careful with brittle emissions vacuum hoses, they need to be brought up to meet the now higher vacuum ports of your intake and may have added stress placed on them and crack....mine did during install.

Seemingly insignificant things to think about when using a spacer, such as torquing down your upper plenum. The spacer is a slightly compressible material and if you torque it too much you can crack your upper plenum, especially the two weak ears of the intake...I did! I would do maybe 10 ft lbs to start, at most maybe 14 or so. I went right for around 20 foot lbs like I always have before and heard a nice loud crack as the front ear by the number 1 runner broke. Luckily explorer intakes are so cheap and plentiful, I just have to port another upper all over again but oh well, its fun and good practice.

Great quality product, great price, thank you LRS!

Yes, I would recommend this item to a friend!

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4 Stars   Just what I needed.
By on 7/16/2016
Image uploaded by david b. I had clearance concerns between my throttle body linkage and aftermarket valve covers. This gave me just what I needed. If i wasn't worried about hood clearance, I would have went with the 1" spacer. As far as performance gains, don't let me lie to ya, I don't know. Lots of mods at once. I couldn't tell you.

Yes, I would recommend this item to a friend!

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5 Stars   Very good! Purchased different bolts that were longer
By on 12/8/2016
Very happy with this. Clears my Ford Racing valve covers and stock hood. As it says in the description, you should plan on getting new hardware if you are running Explorer GT40. The 2 short bolts were okay, but the bolts included AND the original Explorer bolts protruded less than 1/2" past the gasket (they're 6.5"). Unsurprising since you are making the intake taller. I went online and purchased 4 7" long bolts that went deeper. I also purposefully purchased this spacer since it blocks the EGR passage for the upper intake since I have deleted that.

Yes, I would recommend this item to a friend!

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5 Stars   Gen 1 Lightning Compatible
By on 5/28/2015
I used this for my 95 Lightning and had no issues with installation. All the bolts were the correct length, and I still have plenty of clearance with my stock hood. BBK offers high-quality products, often times, for a better price than other leading brands out there.

Yes, I would recommend this item to a friend!

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5 Stars   Fit great
By on 8/26/2014
Image uploaded by Steve O. Made my new style injectors with the adaptors fit under the intake.
The stock hood on my 95 mustang was able to close with this spacer.

Yes, I would recommend this item to a friend!

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5 Stars   Perfect again!!
By on 10/2/2015
Wasnt expecting I needed this but did and raises the intake enough..Everything is perfect as usual from LMR!!!

Yes, I would recommend this item to a friend!

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5 Stars   Best service
By on 5/11/2015
Image uploaded by john z. As always your service is excellent, the website is easy to navigate and shipping is fast!

Yes, I would recommend this item to a friend!

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Vehicle Applications

Ford Mustang - 1986 (86) - 1987 (87) - 1988 (88) - 1989 (89) - 1990 (90) - 1991 (91) - 1992 (92) - 1993 (93) - 1994 (94) - 1995 (95)

About This Brand

BBK - Today's Performance
Since 1988 - BBK has dedicated itself to designing and building cutting-edge high-performance parts and accessories for today's EFI-equipped Mustangs and Ford Lightnings while maintaining the OEM quality levels.

From their world-famous line of "Power-Plus-Series" performance throttle bodies to their hundreds of "CNC-Series" performance exhaust offerings - the BBK brand is known for delivering unmatched value and quality. Shop BBK for your Mustang headers, exhaust, cold air intakes, and other performance parts!

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