SWI Starter Heat Shield Wrap 7x24 in Silver — Universal Self-Attaching Aluminum & Fiberglass Protector

SWI Universal Starter Heat Shield Wrap is a self-attaching aluminum and fiberglass wrap (7 x 24 in) that reflects radiant heat to protect starters and solenoids.

If your vehicle or race machine faces high under-hood temperatures, this reflective starter wrap is built to reduce heat exposure to the starter assembly. Constructed from an aluminized mylar surface bonded to heat-blanketing fiberglass, the wrap attaches around most starter housings without cutting or custom fabrication. It’s a compact, serviceable way to limit heat soak and extend component life in both recreational and performance applications.

How does this wrap reduce starter heat stress?

The SWI heat shield uses a reflective aluminum layer to bounce radiant heat away from the starter while the fiberglass backing provides insulation and thermal separation. Together they reduce the heat transferred to the starter body and solenoid, lowering the risk of heat-related degradation. The design targets radiant rather than conductive heat, making it effective when installed between an exhaust component and the starter.

• Reflects up to 90% of radiant heat
• Aluminized mylar faces the heat source for maximum reflection
• Fiberglass backing provides thermal buffering and durability
• Resists temperatures up to approximately 2000°F radiant exposure

Will this fit my starter and how is it installed?

The shield is a universal wrap sized at 7 inches by 24 inches and designed to accomodate most starter shapes and diameters. It’s self-attaching so installation typically requires no drilling or special tools; simply wrap around the starter and secure the integral attachment system. For unusual starter layouts, you can trim the material to fit, but altering the product may affect warranty coverage.

• Universal fit for most starters and solenoids
• Self-attaching wrap—no special tools required
• Trimmable for compact or odd-shaped installations (modifications may void warranty)
• Direct fit recommended; follow fitment check if unsure

What materials and specifications define this heat shield?

The SWI starter heat shield combines an aluminized reflective surface with a fiberglass heat-blanketing core. The finished panel measures 24 inches long, 7 inches wide and about 2mm thick—large enough to wrap most starters while remaining thin and flexible. The product is finished in a silver reflective color for maximum heat rejection and is supplied brand new in single-piece kits.

• Size: 24 in (L) × 7 in (W) × ~2 mm thickness
• Construction: aluminized mylar facing + fiberglass insulation
• Color: silver reflective surface
• Package: 1 starter heat shield per kit, aftermarket part

Does the product come with testing and warranty?

SWI inspects this aftermarket shield prior to shipping to ensure basic quality and performance. It carries a limited 1-month unlimited mileage warranty from SWI against manufacturing defects; modifications will void coverage. If you’re unsure about fitment or need help, contact the seller before altering the part so they can assist or suggest alternatives.

• 100% tested prior to leaving the factory
• 1-month unlimited mileage warranty for manufacturing defects
• Warranty voided if product is modified—contact seller first
• Aftermarket part; confirm compatibility when in doubt

Who is this for: The SWI 7 x 24 inch starter heat shield suits vehicle owners, RV technicians, and motorsport enthusiasts who want an economical, easy-to-install way to reduce radiant heat exposure to starters and solenoids. It’s ideal for hot-rodders, tow vehicle owners, diesel and performance applications where exhaust proximity or turbo heat can cause starter fatigue, and any DIY mechanic seeking a universal, serviceable thermal barrier.