914Rubber Plastic Engine Padding Fastener for Porsche 914 (All Years)
Secure your Porsche 914’s engine compartment padding with the 914Rubber Plastic Engine Padding Fastener (part number 999.591.423.00), designed for all 914 models from 1970-76. This reproduction nylon fastener anchors the firewall insulation pad, preventing it from sagging or shifting, which ensures proper heat and noise insulation for the 1.7L, 1.8L, or 2.0L mid-engine. Six fasteners are required per car to mount the pad securely across the firewall.
PMB Performance, with over 20 years of Porsche 914 expertise, has partnered with 914Rubber for nearly two decades, selling more 914Rubber SKUs than any other retailer. Made from high-strength, heat-resistant nylon, this fastener withstands engine bay temperatures up to 220°F and resists degradation from oil vapors, unlike factory clips that can crack or loosen. Its 6mm stem and 12mm head provide a firm grip, locking into the firewall’s pre-drilled holes to hold the 914.511.091.10 insulation pad in place.
The engine padding is critical for reducing cabin noise and shielding the interior from the Type 4 engine’s heat, which can exceed 200°F at the firewall. A loose or missing fastener allows the pad to droop, compromising insulation and risking contact with hot components like the exhaust. This 914Rubber fastener installs easily, pushing into place with a satisfying click, and its durable design ensures long-term stability, even in high-vibration conditions.
Why PMB Performance? We’ve restored 914s from bare chassis to concours winners, mastering engine bay details like insulation and wiring routing. Whether you’re refreshing a 914/4 or a rare 914/6, our expertise ensures you get parts that fit perfectly and perform. Questions? Call (855) 786-7101 or email Support@pmbperformance.com. Trust PMB Performance and 914Rubber to keep your 914’s engine bay tidy and functional.