EP-318C HEI Distributor for Chrysler Dodge Mopar Big Block 383-400 V8 (Replaces 3438710)

The EP-318C is a complete HEI ignition distributor for Chrysler Dodge Mopar B-series big block V8 (383, 400 CID) ?? the engine that powered the Dodge Charger, Plymouth Road Runner, and GTX during the golden muscle car era. Correctly dimensioned for the B-series big block; not interchangeable with the LA small block (EP-318D) or RB big block. Red cap with brass terminals, 65,000-volt coil. Fits Charger, Coronet, Road Runner, GTX, and B-body D-series trucks 1958-1978. Replaces OEM 3438710. ISO 9001:2015, CE-EMC, UL, UKCA certified.

EP Aftermarket Ignition Distributor

EP-318C — HEI Distributor for Chrysler Dodge Mopar Big Block 383 400 B-Series V8

HEI distributor · Red cap · Mopar BB 383 400 · 65,000V coil · Charger Road Runner Challenger · Complete

ISO 9001:2015CE-EMCUKCAGlobal Export

Model

EP-318C

Type

HEI

Engine

Mopar BB 383/400

Cap Color

Red

Coil

65,000 V

Technical specifications

ParameterDetail
EP Model No.EP-318C
Product typeHEI Ignition Distributor — Complete Assembly
Vehicle applicationChrysler, Dodge, Plymouth big block B-series V8 vehicles
EngineChrysler B-series big block 383 CID, 400 CID V8
Replaces OEM3438710 / 3438711 / 2444543
IncludesDistributor Body, 65K Coil, Red Cap (brass terminals), Rotor, Module, Adjustable Vacuum Advance
CertificationISO 9001:2015 · CE-EMC · UL · UKCA
BrandEP (Ever-Power)

The EP-318C serves Chrysler's legendary B-series big block V8 ?? the 383 and 400 cubic inch engines that powered the Dodge Charger, Plymouth Road Runner, and GTX during the golden era of American muscle. The 383 Magnum was the standard performance engine in the Charger and Road Runner, while the 400 was a popular choice in late B-body applications. These engines are at the heart of some of the most sought-after muscle cars in the world, and reliable ignition is essential for both restoration and serious driving use.

The Chrysler B-series big block has a unique distributor configuration distinct from both the Mopar LA small block and the RB big block (426 Hemi and 440). The EP-318C is correctly dimensioned for the B-series block distributor location and drive system, ensuring proper shaft depth and drive gear mesh for reliable ignition timing.

Manufactured under ISO 9001:2015 quality management with dimensional verification for Chrysler B-series big block distributor specifications.

EP high-precision ignition distributor production equipment

Key features

Mopar B-series 383/400 coverage

Specifically designed for the 383 and 400 CID B-series big block used in Charger, Road Runner, and GTX muscle cars.

Mopar BB-specific geometry

B-series big block distributor configuration ?? distinct from the LA small block and RB big block.

65K coil for B-block performance

Strong spark energy for the high-flow B-block combustion chambers and performance camshaft applications.

Charger and Road Runner heritage

Serves the most iconic Mopar muscle cars of the classic era.

Vehicle fitment

MakeModelYearsEngine
DodgeCharger / Coronet1958-1978383 / 400 V8
PlymouthRoad Runner / GTX1968-1974383 / 400 V8
Dodge / PlymouthB-body muscle cars1966-1974383 / 400 V8
DodgeChallenger (B-body versions)1970-1974383 V8
DodgeD-series Pickup1966-1978383 / 400 V8

EP HEI distributor full series compatibility overview

Application scenarios

Charger and Road Runner restoration

Dodge Charger and Plymouth Road Runner owners maintaining or restoring these iconic B-body Mopars choose the EP-318C for reliable HEI ignition.

B-body restomod performance

B-body restomod builders upgrading their 383/400 Mopar big blocks appreciate the EP-318C's simplified wiring and performance coil.

Mopar specialist supply

Chrysler performance specialists stock the EP-318C as the definitive 383/400 B-block HEI distributor.

Installation guide

Mopar B-series big block distributors are located at the rear of the engine. Disconnect battery, mark cap and housing positions, remove old unit, lower EP-318C, connect BAT wire and vacuum advance, set timing per Chrysler B-block specification. Do not substitute an LA small block or RB big block unit ?? B-series 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.

EP ISO 9001 CE EMC UL UKCA certifications

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EP-10Chevy SBC 262-400 / BBC 396-454SBC/BBC V8 Blue
EP-10BKChevy SBC 262-400 / BBC 396-454SBC/BBC V8 Black
EP-10-V6Chevy/Buick/Olds/Pont V6GM V6 229/262
EP-10TBChevy Corvette Tach DriveSBC/BBC Tach
EP-302HEA-1Ford 289-302 5.0 V8Ford SBF Blue
EP-302HEA-2Ford 351 Windsor V8Ford 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

Founded in 1999 in Ningbo, Zhejiang Province, HZPT operates automated and semi-automated production lines for ignition distributors, oil pump motors, and automotive electrical components. Our facility has received ISO9001:2015, CE-EMC, UL, and UKCA certifications, and our products are supplied to OEM customers in China and exported to the international aftermarket.

EP ignition distributor manufacturing facility

Our HEI distributor range now covers 29 models across American V8, V6, and Flathead applications. Wholesale buyers, Amazon sellers, and aftermarket distributors source directly from our factory, eliminating the middleman markup that inflates the price of name-brand HEI distributors. EP is part of the Ever-Power Group, also producing worm reducers and a comprehensive range of mechanical transmission products.

Frequently asked questions

What are the symptoms of a failing HEI distributor?
Common symptoms include hard starting, engine misfires at high RPM, rough idle, loss of power under load, and occasional stalling. A failing HEI module (the most common failure component) typically causes complete spark loss when hot ?? the engine starts fine when cold, stalls after reaching operating temperature, and may restart after a cool-down period. A worn HEI cap with carbon tracking between towers causes crossfire and cylinder-specific misfires that worsen as the cap deteriorates.
Does the EP-318C come with a cap, rotor, and coil?
Yes. The EP-318C ships as a complete ready-to-run assembly including the distributor housing, 65,000-volt high-output ignition coil, distributor cap with brass terminals, rotor, ignition module, adjustable vacuum advance canister, and hold-down hardware. No additional ignition components are required for installation.
Does the 383 and 400 use the same HEI distributor?
Yes. The Chrysler 383 and 400 B-series big block engines share the same block architecture and distributor drive specification. The EP-318C fits both displacements. Note that the Chrysler RB big block engines (426 Hemi, 440 Six Pack) use a different, taller block and different distributor ?? those applications require the EP-318M (Mopar RB 383-400 unit).
Is the EP HEI distributor compatible with aftermarket ignition boxes such as MSD?
EP HEI distributors with a magnetic pickup (Ready-to-Run style) are compatible with external ignition boxes including MSD 6-series, 7-series, and 8-series units, as well as equivalent ignition boxes from Mallory, Crane, and Holley. Standard HEI distributors with an internal module operate as standalone units and do not require an external ignition box, though they can be paired with one for additional timing control. Consult the ignition box manufacturer's instructions for the correct connection procedure.
How do I order the EP-318C for export or wholesale?
EP supports single-unit orders for market sampling, carton quantities for repair shops, and container-volume wholesale orders. Standard production lead time is 15-30 days. OEM branding, private-label packaging, and custom color selection are available for qualifying volumes. Contact our team via the inquiry form or WhatsApp for pricing and availability.

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.

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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
product materials available

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
product finishing

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
product packages

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