Wavetrac Differential, Porsche 901 915: 911, 914 1969-73
Bring modern traction technology to your classic Porsche with the Wavetrac Differential, designed for 901 and early 915 transmissions found in 1969–1973 911 and 914 models.
Built from the ground up, this differential features optimized gear tooth profiles for superior strength and improved oil retention. The compact internal gearset reduces rotational mass while maintaining exceptional durability. Key areas, like the side gear-to-axle interface, are reinforced to handle increased power levels — perfect for both stock and modified engines.
What sets Wavetrac apart is its patented cam system, which ensures power continues to reach the gripping wheel during zero-axle-load conditions — a major advantage over conventional torque-biasing differentials that act like open diffs in these scenarios.
Handcrafted in the USA by Autotech Driveline, each unit is built using:
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High-strength 9310 alloy steel gears
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Case-hardened billet steel housings
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Premium ARP fasteners
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A transferable Limited Lifetime Warranty
Upgrade your early 911 or 914 with race-proven traction and modern reliability — without compromising drivability.