{"product_id":"mechanical-fuel-pump-m4503-1971-gmc-g15-g1500-work","title":"Direct Bolt On Mechanical Fuel Pump For 1971 GMC G15 And G1500 Van No Sweat Drop In Replacement Built Tough For Easy Install And Stress Free Cruising Rides","description":"\u003cdiv\u003e\n\u003cp\u003eReplacement Mechanical Fuel Pump For 1971 GMC Van\u003cbr\u003e✔️ Single unit M4503 pump, tight seals and steady flow\u003c\/p\u003e \u003cp\u003eYou receive one direct-bolt fuel pump built to slot right into your engine bay. This sealed assembly channels gas straight to your carburetor. Your vintage cruiser runs smooth on weekend drives.\u003c\/p\u003e \u003cp\u003e✅ Part Number: M4503\u003cbr\u003e✅ Pack Quantity: Single Unit\u003cbr\u003e✅ Vehicle Application: 1971 GMC G15 Van\u003cbr\u003e✅ System Role: Mechanical Gas Feed Pump\u003cbr\u003e✅ Alternate Codes: Airtex 40446, Onix OMP4046, Spectra SP1021MP, Delphi MF0051, Sparta PN8027, GMB 530-8070\u003c\/p\u003e \u003cp\u003e💡 How do drivers pick the right mechanical fuel pump for old-school pickup trucks?\u003cbr\u003eYou grab a handy drop-in unit that matches your exact frame spec and keeps gas flowing steady.\u003cbr\u003e- Verify your engine displacement, pull rod length, and mounting base pattern first.\u003cbr\u003e- Check alternate OEM codes to lock in factory spring tension and prevent dry starvation.\u003cbr\u003e- Test the steel body thickness so the pump handles bumpy dirt roads without flexing too much.\u003cbr\u003e- Swap out tired diaphragms fast before vapor lock starts ruining your afternoon drive.\u003c\/p\u003e✝️\u003c\/div\u003e","brand":"ONIX","offers":[{"title":"Default Title","offer_id":67895619387627,"sku":"M4503-Fuel Pump-1971-GMC-G15\/G1500 Van-OMP40446","price":60.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/SP1021MP_FRO_P01_220_5098a031-38bf-4c71-9732-045590b35759.jpg?v=1791397686","url":"https:\/\/vxb.com\/products\/mechanical-fuel-pump-m4503-1971-gmc-g15-g1500-work","provider":"VXB Bearings","version":"1.0","type":"link"}