Phenolic Carburetor Spacer with 4150/4160 Holley Bolt Pattern [2 in. Tall 4-Hole Plenum]
InfoVehicle Info Needed
JEGSPART NUMBER: 555-15492

Phenolic Carburetor Spacer with 4150/4160 Holley Bolt Pattern [2 in. Tall 4-Hole Plenum]

$2699$29.09You Save$2.10
ShippingShips on Oct 08, 2026
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4-Hole Plenum Phenolic Carburetor Spacers
Phenolic Carburetor Spacer
  • 4150/4160 Bolt Pattern
  • 2 in. Tall
  • 4-Hole Plenum
  • Includes:
    • (2) Gaskets
    • Mounting Hardware

    • Height: 2” for some street and most racing applications
    • 4150 square bore mounting flange for holley, edelbrock, afb, carter, quick fuel, proform, and other carburetors and throttle bodies
    • 4-hole design for single or dual plane intake manifolds
    • Includes spacer, 2 gaskets, and mounting hardware
    • Made from phenolic plastic for weight savings and improved insulation from heat
    • JEGS 15492 Phenolic Carburetor Spacer with a 4-hole plenum is made from thermoset plastic to provide a heat sink between an intake manifold and carburetor with a 4150/4160 series square bore Holley bolt pattern. This 2-inch tall spacer will help keep fuel cooler for a denser fuel mixture, reduce vapor lock, and add additional plenum volume to increase engine performance.

      Features:

      • (1) Carburetor Spacer: 2 in. tall with a 4150/4160 series square bore Holley bolt pattern and a 4-hole plenum with 1.72 in. ID holes
      • (4) Carburetor mounting studs: 5/16 in.-18 threads on intake end and 5/16 in.-24 on carburetor end x 3.350 in. Long
      • (4) Carburetor stud nut: 5/16 in.-24 threads with a 1/2 in. hex head
      • (4) Carburetor stud flat washers: 5/16 in. ID x .591 in. OD x .060 in. thick
      • (1) Carburetor Gasket: 4150/4160 series square bore Holley bolt pattern with 4-hole plenum
      • (1) Carburetor Gasket: 4150/4160 series square bore Holley bolt pattern with open plenum

    Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

    • Increase Your Torque and Horsepower with More Air Flow

      JEGS molded Phenolic Carburetor Spacers are available in three heights to tune your square flange, 4150/4160 style base, carbureted vehicle to the track or altitude conditions. Designed to lower the transfer of heat between the intake manifold to the carb for an increase in power. Includes gaskets and mounting hardware for easy installation. Not for use with stock manifolds with heat crossovers.

    Part TypeCarburetor Spacer
    Product LineJEGS Carburetor Spacers
    BrandJEGS
    Package Height4.3
    Package Width7.1
    Package Length7.5
    Weight2.1 PG
    Part CategoryPerformance Parts
    Gaskets IncludedYes
    Carburetor Spacer FinishBlack
    Carburetor Type4150 Style Square Flange
    Carburetor Spacer Style4-hole
    Mounting Hardware IncludedYes
    Carb Type4150 Style Square Flange
    Part FitmentUniversal
    Carburetor Spacer MaterialPhenolic plastic
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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