EP-403 HEI Distributor for Oldsmobile V8 260-455 (Replaces 1103387)

The EP-403 is a complete HEI distributor for the Oldsmobile V8 engine family spanning 260 through 455 cubic inches. Oldsmobile had its own distinct V8 engine family separate from the Chevrolet SBC/BBC, with unique block architecture, distributor location, and drive specifications. The Olds 442 with the W-30 455 V8 is one of the most revered muscle cars of the classic era, and Olds 350 engines powered the Cutlass and Delta 88 through millions of reliable miles of everyday service.

The Oldsmobile V8 uses a different distributor mounting and drive configuration than the Chevrolet SBC/BBC, requiring a specific Oldsmobile-application HEI distributor rather than a universal Chevy unit. The EP-403 is correctly dimensioned and geared for the Oldsmobile family, covering the full displacement range from the small 260 CID to the massive 455 CID W-30. The 65,000-volt coil provides strong spark energy across the broad Olds V8 displacement range.

Manufactured under ISO 9001:2015 quality management with dimensional verification for Oldsmobile V8 distributor specifications.

Every EP HEI distributor is manufactured under ISO 9001:2015 certified quality management. Each unit is individually tested for ignition coil output voltage, electronic module switching function, vacuum advance response, and shaft seal integrity before shipment. CE-EMC electromagnetic compatibility certification, UL listing, and UKCA conformity mark ensure full compliance across all major global export markets.

HZPT is the international brand of Ningbo Xianlong Automobile Fittings Co., Ltd. We have manufactured more than 300 distributor models and 300 motor models since 1999, serving global aftermarket channels in North America, Europe, Australasia, and South America.

Our HEI series is engineered to the same specification as the leading American performance brands, with the advantage of factory-direct pricing for wholesale buyers. Every EP HEI distributor ships complete with the coil, cap, rotor, module, and vacuum advance canister — everything a shop or reseller needs in one box. EP is part of the Ever-Power Group, also producing electric motors and a comprehensive range of mechanical transmission products.

Disclaimer: Chevrolet, Ford, Pontiac, Oldsmobile, Buick, Cadillac, Chrysler, Dodge, Plymouth, Jeep, AMC, Holden, Volkswagen, and other vehicle brand names and OEM part numbers are used for product compatibility reference only. EP (Ever-Power) products are high-quality aftermarket replacement parts and are not affiliated with original vehicle or component manufacturers. All trademarks remain the property of their respective owners.

LMC