914Rubber Non Rev Limiting Ignition Rotor for Porsche 914 (1970-76)
For nearly two decades, PMB Performance has been the go-to for Porsche 914 enthusiasts, and our partnership with 914Rubber has been a cornerstone of that journey. Together, we’ve built a legacy of keeping these mid-engine classics alive with authentic, high-quality parts. As the largest retailer of 914Rubber SKUs worldwide, we sell more seals, bushings, and specialty components than anyone else—because we know your 914 deserves the best.
This BOSCH non rev limiting ignition rotor (part number 055.905.225.B) is engineered for Porsche 914 models from 1970 to 1976, including select Audi and VW applications. It’s a critical piece of the ignition system, ensuring precise spark delivery to your air-cooled flat-four. Unlike rev-limiting rotors, this design allows your engine to breathe freely across the RPM range, maximizing performance for spirited drives or track days. Whether you’re running a stock 1.7L, a peppy 2.0L, or a modified setup, this rotor delivers consistent timing to keep your 914 humming.
Why It Matters
The ignition rotor spins inside the distributor, transferring high-voltage current from the coil to the spark plugs via the distributor cap. A worn or cracked rotor can cause misfires, rough idling, or power loss—symptoms any 914 owner dreads. Our 20 years of wrenching on 914s at PMB Performance taught us that BOSCH rotors are unmatched for durability and fitment. This non rev limiting version avoids the restrictive cut-off of factory-limited rotors, giving you full control over your engine’s potential. It’s a direct replacement, requiring one per car, and fits seamlessly with OEM or aftermarket distributors.
Technical Edge
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Material: High-strength phenolic resin resists heat and electrical arcing, critical for the 914’s 12-volt ignition running at 30,000+ volts.
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Design: Precision-molded contact arm ensures low resistance and reliable spark transfer, even under high RPMs (up to 7,000 RPM on a healthy 2.0L).
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Compatibility: Suits all 914 model years (1970-76), plus 1975-76 924s and select VW Type 4 engines. Cross-references with 055905225B.
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Installation Tip: Check your distributor cap for carbon tracking and replace worn spark plug wires (we carry 914Rubber’s premium wire sets) to optimize performance. Torque the rotor screw to 2-3 Nm to avoid over-tightening.
We’ve been in the trenches with 914s since the early days—restoring, racing, and troubleshooting everything from vapor lock to valve adjustments. Our partnership with 914Rubber isn’t just business; it’s a shared passion for preserving the 914’s lightweight, mid-engine soul. We selltheir full catalog—gaskets, weatherstripping, suspension bushings, and more—because we believe in parts that fit right the first time. This ignition rotor is no exception, backed by our hands-on expertise and 914Rubber’s commitment to quality.