{"product_id":"transtar-gray-2-in-1-automotive-primer-spray-15-oz-fast-drying-corrosion-resistant","title":"TRANSTAR Gray 2-in-1 Automotive Primer Spray 15 oz — Fast-Drying, Corrosion-Resistant","description":"\u003cp\u003e\u003cstrong\u003eTRANSTAR 4603 Gray 2-in-1 Primer is a 15 oz aerosol primer that combines surface conditioning and corrosion-resistant priming in one gray spray, ready to use on automotive and metal surfaces.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis 2-in-1 aerosol primer from TRANSTAR saves time in prep work by combining a fast-drying primer and a built-in etch\/sealer in a single can. Designed for spot repairs, small panels and metal-to-metal touch-ups, the gray finish provides even coverage that helps reveal surface imperfections before topcoat application. The 15 oz size is convenient for DIYers and professionals who need a portable, easy-to-apply priming solution.\u003c\/p\u003e\n\n\u003ch3\u003eWhat surfaces will TRANSTAR 4603 Gray 2-in-1 Primer work on?\u003c\/h3\u003e\n\u003cp\u003eThe primer is formulated for bare metal, sanded OEM finishes and properly prepared automotive panels. It adheres well to steel and other metals after surface cleaning, and it’s also suitable for properly abraded existing paint. Always follow surface prep recommendations for the best adhesion.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBest for bare steel and aluminum after degreasing\u003c\/li\u003e\n  \u003cli\u003eAccepts sanded automotive OEM or aftermarket paint\u003c\/li\u003e\n  \u003cli\u003eNot intended for plastics without proper adhesion promoter\u003c\/li\u003e\n  \u003cli\u003eUse on small panels, edges and spot repairs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I apply the 15 oz aerosol for professional-looking results?\u003c\/h3\u003e\n\u003cp\u003eShake the can thoroughly and spray from the recommended distance in smooth, overlapping passes. Apply multiple light coats, allowing tack time between sprays to avoid runs and achieve a uniform film thickness. Finish sanding between coats if needed for a smooth topcoat base.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eShake 1–2 minutes after mixing ball moves freely\u003c\/li\u003e\n  \u003cli\u003eSpray 8–12 inches from the surface in even passes\u003c\/li\u003e\n  \u003cli\u003eLight coats rather than one heavy coat to prevent sagging\u003c\/li\u003e\n  \u003cli\u003eAllow manufacturer-recommended flash times between layers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this primer help with corrosion resistance and paint adhesion?\u003c\/h3\u003e\n\u003cp\u003eAs a 2-in-1 product, this TRANSTAR primer delivers both adhesion promotion and sealing properties that help protect metal from moisture while improving topcoat bond. It is not a full replacement for specialized corrosion products on severely rusted panels, but it provides reliable protection for cleaned and prepped areas before finishing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCombines adhesion and sealing functions in one step\u003c\/li\u003e\n  \u003cli\u003eGray tint helps reveal surface flaws prior to painting\u003c\/li\u003e\n  \u003cli\u003eProvides short-term corrosion protection on prepped metal\u003c\/li\u003e\n  \u003cli\u003eUse with appropriate topcoats for long-term protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: TRANSTAR 4603 Gray 2-in-1 Primer in a 15 oz aerosol is intended for automotive technicians, body shop professionals and DIY enthusiasts doing small repairs, panel spot work or test patches. It appeals to users who want a compact, easy-to-spray primer that reduces steps in the prep process and provides a neutral gray base for most topcoat colors. For larger jobs or severe corrosion, pair this product with dedicated rust treatment and full-coverage primers as part of a complete refinishing workflow.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is TRANSTAR 4603 Gray 2-in-1 Primer ready to spray from the can?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 15 oz aerosol is pre-mixed for direct application; shake thoroughly before use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I apply this primer over rusted areas?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. Clean or remove heavy rust first; the primer protects prepped metal but isn’t a substitute for rust treatment.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TRANSTAR","offers":[{"title":"Default Title","offer_id":48084767178910,"sku":"B00H2W41X6","price":39.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/transtar-4603-gray-2in1-primer-front-can.jpg?v=1785862393","url":"https:\/\/northtrailauto.ca\/products\/transtar-gray-2-in-1-automotive-primer-spray-15-oz-fast-drying-corrosion-resistant","provider":"North Trail Auto","version":"1.0","type":"link"}