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Top rated automotive replacement carburetor spacers and adapters

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Top rated automotive replacement carburetor spacers and adapters

AI-generated summary · updated July 27, 2026 · verify details before purchase.

  1. Best overall

    Holley Carburetor Spacer Kit - 1/8" Throttle Body Adapter

    4.6/5 $55-$65

    Provides a precise 1/8" lift for improved airflow and throttle response in most street engines.

    • Precision CNC machining
    • Sturdy aluminum construction
    • Easy bolt-on install
    • May require short fuel line trim
    View on Amazon manufacturer site
  2. Best for mild boost

    Edelbrock 2.5" Carburetor Spacer with Boost

    4.5/5 $45-$55

    Designed for mild forced-induction setups, the spacer adds 2.5" of plenum volume to smooth airflow.

    • Boost-ready design
    • Lightweight aluminum
    • Fits most V8s
    • Not ideal for high-boost applications
    View on Amazon manufacturer site
  3. Best budget pick

    MSD Performance Carburetor Throttle Body Spacer

    4.4/5 $40-$50

    An affordable spacer that increases throttle opening and low-end torque without sacrificing reliability.

    • Low price point
    • Simple bolt-on
    • Durable steel
    • Heavier than aluminum
    View on Amazon manufacturer site
  4. Best for small block Chevy

    BBK 0.5" Carburetor Spacer for Small Block Chevy

    4.3/5 $30-$40

    A thin 0.5" spacer that fine-tunes the carburetor height for optimal fuel mixture on classic small-block Chevys.

    • Fits tight bays
    • Improves idle stability
    • Machined from billet aluminum
    • Limited to specific carb models
    View on Amazon manufacturer site
  5. Best adjustable option

    JEGS Performance Adjustable Carburetor Adapter

    4.5/5 $60-$70

    Features a set-screw design allowing 0.5" to 1.5" height adjustments for custom tuning needs.

    • Adjustable height
    • Robust steel build
    • Universal fit
    • Requires careful setting
    View on Amazon manufacturer site
  6. Best for performance builds

    Racingline Pro Carburetor Spacer - 2mm

    4.2/5 $35-$45

    A thin 2mm spacer that subtly boosts airflow for street-performance engines without drastic changes.

    • Minimal weight gain
    • Easy install
    • Improves mid-range power
    • Effect modest
    View on Amazon manufacturer site

Buying advice

When choosing a carburetor spacer or adapter, match the lift height to your engine’s intake geometry and intended use. Aluminum spacers are lighter and resist corrosion, while steel offers durability for high-stress applications. Adjustable adapters provide flexibility for fine-tuning, but ensure you set the correct height to avoid fuel delivery issues. Consider your vehicle’s make, carburetor model, and any forced-induction plans to select the most compatible product.

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