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25% Off Online Orders of Select Hard Parts. Enter Promo Code MMJ30 in Cart.

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25% Off Select Parts and Accessories
Receive 25% Off Your Online or In-Store Purchase. Use promotional code MMJ25 at checkout to receive discount. Not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included will be displayed in product search results and product detail pages. INCLUDES the following categories: Starters, Alternators, Fuel Pumps, Radiators, Shocks & Struts, Chassis, CV Axles, Batteries, Ignition, Window Motors, Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Headlamps and Bulbs. Excludes the following brands: Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Moog, Wagner and BBK Performance. Valid online until 2:59 am EST on 5/1/17.

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  • Part #: 990003|
  • SKU: 20060808


    • Designed for GM boot-in mass air flow sensor adapters
    • Includes one 3-5/8 inch to 4 inch sleeve
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Spectre GM MAF Sleeve

Spectre's intake couplers and sleeves for GM mass air flow sensors are designed to adapt most boot-in style GM mass air flow sensors to a 4 inch intake system. This 3-5/8 inch to 4 inch sleeve is engineered for optimum fit and function.
  • Designed for GM boot-in mass air flow sensor adapters
  • Includes one 3-5/8 inch to 4 inch sleeve
  • Adapts most GM boot-in mass air flow sensors to 4 inch intake systems
  • Helpful for applications requiring an additional 3-5/8 inch sleeve

Product Box Height
6.1 in (155 mm)
Hardware Included
0.3 lb (0.1 kg)
Package Contents
Material Used
Product Box Length
4.8 in (122 mm)
Inside Diameter
3.625 in (92 mm)
Product Box Width
2.7 in (69 mm)