This ATE brake caliper seal ring is a direct-fit replacement for Porsche applications listed in the fitment table below. ATE, a division of Continental AG, has been engineering hydraulic brake systems in Germany for over a century. An OEM supplier to manufacturers like Porsche AG, Mercedes-Benz, and Volvo, ATE produces factory-level rotors, pads, and hydraulic components built to strict European standards. Known for consistent pedal feel, proper fitment, and long service life, ATE remains a trusted choice for reliable, OE-quality braking performance.

Technical Details

Manufacturer part number: 390529
Type: Caliper sealing O-ring / seal ring
OE cross reference: 901.351.928.10 (commonly listed)
Used during caliper service to maintain proper internal sealing (verify caliper type per notes)

Fitment & Compatibility

Use the fitment table below to confirm year and model details. If you’re unsure on fitment, send us your VIN and we’ll help verify it.

We’ve been doing Porsche brake work for over 20 years, and we still treat fitment questions like they matter—because they do.

Year	Make	Model	Submodel
1965	Porsche	911
1965	Porsche	911
1966	Porsche	911
1966	Porsche	911
1967	Porsche	911
1967	Porsche	911
1968	Porsche	911
1968	Porsche	911
1969	Porsche	911
1969	Porsche	911
1970	Porsche	911
1971	Porsche	911
1972	Porsche	911
1973	Porsche	911
1974	Porsche	911
1975	Porsche	911
1965	Porsche	912
1966	Porsche	912
1967	Porsche	912
1968	Porsche	912
1969	Porsche	912
1972	Porsche	914
1970	Porsche	914	6
1971	Porsche	914	6

Seal Ring

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ATE Front Brake Caliper Seal Ring for Porsche 911/912/914 (1965–1975)