EP-455 HEI Distributor for Pontiac V8 350-455 (Replaces 1103237)
The EP-455 is a complete HEI ignition distributor for the Pontiac V8 engine family (350, 389, 400, 421, 428, 455 CID) — the engine that powered the original GTO, Firebird, and Trans Am. Pontiac-specific distributor geometry; the Pontiac V8 block is a completely different design from the Chevrolet SBC/BBC and requires its own specific distributor. Red cap with brass terminals, 65,000-volt coil, adjustable vacuum advance. Fits GTO, Firebird, Trans Am, Grand Prix, and LeMans. Replaces OEM 1103237 / 1103704. ISO 9001:2015, CE-EMC, UL, UKCA certified.
EP Aftermarket Ignition Distributor
EP-455 — HEI Distributor for Pontiac V8 350, 389, 400, 421, 428, 455
HEI distributor · Red cap · Pontiac V8 350-455 · 65,000V coil · GTO Firebird Trans Am · Complete
Model
EP-455
Type
HEI
Engine
Pontiac V8 350-455
Cap Color
Red
Coil
65,000 V
Technical specifications
| Parameter | Detail |
| EP Model No. | EP-455 |
| Product type | HEI Ignition Distributor — Complete Assembly |
| Vehicle application | Pontiac GTO, Firebird, Trans Am, Grand Prix, LeMans — V8 engines |
| Engine | Pontiac V8 350, 389, 400, 421, 428, 455 CID |
| Replaces OEM | 1103237 / 1103238 / 1103704 / 1103811 |
| Includes | Distributor Body, 65K Coil, Red Cap (brass terminals), Rotor, Module, Adjustable Vacuum Advance |
| Certification | ISO 9001:2015 · CE-EMC · UL · UKCA |
| Brand | EP (Ever-Power) |
The EP-455 is a complete HEI distributor for the Pontiac V8 engine family — one of the most celebrated and distinctive American V8 designs, powering the legendary GTO, Firebird, and Trans Am. Pontiac engineers designed their own V8 independent of Chevrolet, with unique displacement choices, combustion chamber designs, and distributor specifications. The Pontiac 400 and 455 are particular favorites in the performance community for their broad power bands and excellent torque characteristics.
Pontiac V8 engines use their own distributor mounting location and drive specifications, requiring a Pontiac-specific HEI unit rather than a generic Chevrolet adaptation. The EP-455 is correctly dimensioned for the Pontiac V8 block, covering the full range from the 350 base engine through the 455 High Output in Firebird Trans Am applications.
Manufactured under ISO 9001:2015 quality management with Pontiac-specific dimensional verification. The EP-455 is available with red cap — the classic performance color that complements the chrome and aluminum accents of classic Pontiac muscle car engine bays.

Key features
Pontiac V8 family coverage 350-455
Covers the complete Pontiac V8 family from the 350 through the 455 High Output — the engine that made the Firebird Trans Am the icon it is.
Pontiac-specific distributor geometry
Correctly dimensioned for the Pontiac V8 block — not a Chevy unit with a Pontiac gear.
GTO and Trans Am heritage
Serves the most celebrated Pontiac muscle cars — the original muscle car and the ultimate American performance icon of the 1970s.
65K coil for Pontiac performance
Strong spark for stock and modified Pontiac V8 applications.
Vehicle fitment
| Make | Model | Years | Engine |
| Pontiac | GTO | 1964-1979 | 389 / 400 / 455 V8 |
| Pontiac | Firebird / Trans Am | 1967-1981 | 350 / 400 / 428 / 455 V8 |
| Pontiac | Grand Prix / LeMans | 1963-1979 | 350 / 400 / 455 V8 |
| Pontiac | Full-size / Bonneville | 1961-1979 | 350 / 400 / 428 / 455 V8 |

Application scenarios
GTO and Trans Am restoration
GTO and Trans Am owners maintaining or upgrading their Pontiac classics use the EP-455 for reliable HEI performance.
Firebird performance build
Firebird Formula and Trans Am owners building performance versions of these iconic F-body Pontiacs choose the EP-455 as part of their ignition upgrade.
Pontiac specialist supply
Shops specializing in Pontiac performance vehicles stock the EP-455 as the definitive Pontiac HEI distributor.
Installation guide
Pontiac V8 distributors are located at the rear of the engine. Disconnect battery, mark cap and housing positions, remove original Pontiac distributor, lower EP-455 to correct Pontiac V8 shaft depth, connect BAT wire and vacuum advance, set timing per Pontiac specification. Do not substitute a Chevrolet unit — Pontiac-specific distributor required. Approximately 30-45 minutes.
Need pricing or technical assistance?
We respond within 24 hours · MOQ as low as 1 unit · OEM/private-label available
Quality assurance
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.

More EP HEI distributors
| Model | Application | Engine |
| EP-10A | Jeep AMC V8 290-401 | AMC V8 290-401 |
| EP-10C | Chevy SBC 262-400 / BBC 396-454 | SBC/BBC V8 Red |
| EP-10 | Chevy SBC 262-400 / BBC 396-454 | SBC/BBC V8 Blue |
| EP-10BK | Chevy SBC 262-400 / BBC 396-454 | SBC/BBC V8 Black |
| EP-10-V6 | Chevy/Buick/Olds/Pont V6 | GM V6 229/262 |
| EP-10TB | Chevy Corvette Tach Drive | SBC/BBC Tach |
| EP-302HEA-1 | Ford 289-302 5.0 V8 | Ford SBF Blue |
| EP-302HEA-2 | Ford 351 Windsor V8 | Ford 351W Blue |
About the manufacturer
EP (Ever-Power) — Automotive Ignition Specialist Since 1999
25+
Years in production
300+
Distributor models
80%
Export ratio
4
Certifications
EP (Ever-Power) has been manufacturing automotive ignition distributors and motors since 1999, exporting 80% of production to aftermarket distributors across North America, Europe, Australia, and Southeast Asia. Our HEI series is the most complete in the aftermarket — covering Chevrolet, Ford, Pontiac, Oldsmobile, Buick, Cadillac, Chrysler, Jeep, and Holden applications in one product family.

ISO 9001:2015 quality management, CE-EMC electromagnetic compatibility certification, UL listing, and UKCA conformity cover every unit we ship. Our HEI distributors are manufactured with CNC-machined aluminum housings, 65,000-volt high-output coils, and brass cap terminals tested to OEM and above standards. EP is part of the Ever-Power Group, also producing couplings and a comprehensive range of mechanical transmission products.
Frequently asked questions
What are the symptoms of a failing HEI distributor?
Does the EP-455 come with a cap, rotor, and coil?
Is the Pontiac 400 and 455 distributor the same as the Chevrolet 400 and 454?
Is the EP HEI distributor compatible with aftermarket ignition boxes such as MSD?
How do I order the EP-455 for export or wholesale?
Ready to order EP HEI distributors?
300+ models · 65K coil · Brass terminals · Factory-direct pricing · Global export
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
Additional information
| Editd by | LMC |
|---|
Product Quick Detail:
- Standard and non-standard available
- With high quality and competitive price
- Prompt delivery
- Packing as per customer’s demand.
We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.
Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port






