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PERRIN Coolant Hose Adapter 38mm ID Hose – Patterson Performance Parts
Amazon.com: GlowShift 38mm 1-1/2" Radiator Hose Attachment Adapter for Water Coolant Temperature Gauge Sensor - Includes Hose Clamps : Automotive
Gimmick Motorsports 38mm Water Temperature Sender Radiator Hose Adapto – Import Image Racing
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D1 Spec 38mm hose adapter for 1/8 NPT sensor - Black for Honda ✓ AKR Performance