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Spectre - SPE-990003 Performance 990003 3-5/8" x 4" MAFS Adapter Sleeve for GM
Spectre - SPE-990003 Performance 990003 3-5/8
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Spectre’s intake couplers and reducers for GM mass airflow sensors are designed to adapt most boot-in style GM mass air flow sensors to a 4 inch intake system. We offer 3-5/8 inch to 4 inch reducers as well as 3-7/8 i...

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Product Review

Spectre’s intake couplers and reducers for GM mass airflow sensors are designed to adapt most boot-in style GM mass air flow sensors to a 4 inch intake system. We offer 3-5/8 inch to 4 inch reducers as well as 3-7/8 inch to 4 inch reducers.

  • Adapts GM mass air flow sensor to 4 inch intake system
  • Allows the use of 4 inch boot on 3-5/8 inch OD GM MAF sensors
  • Sleeve only, no installation hardware
  • Lifetime warranty

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