EP-10-6A HEI Distributor for Jeep AMC CJ5 CJ7 YJ V6 and 258 (Replaces 3242155)

The EP-10-6A is a complete HEI ignition distributor for Jeep CJ5, CJ7, and Wrangler YJ equipped with the AMC 258 inline-six (4.2L) and AMC V6 variants. Converting the legendary AMC 258 from points to HEI eliminates points adjustment, provides stronger spark, and simplifies the wiring harness — particularly valuable for off-road use where vibration and water exposure challenge traditional ignition components. Blue cap, 65,000-volt coil, one-wire installation. Replaces OEM 3242155 / 5232525. ISO 9001:2015, CE-EMC, UL, UKCA certified.

EP Aftermarket Ignition Distributor

EP-10-6A — HEI Distributor for Jeep CJ5 CJ7 Wrangler YJ AMC 258 I6 and V6

HEI distributor · Blue cap · Jeep AMC CJ5 CJ7 YJ · 258 I6 / V6 · 65,000V coil · Off-road performance

ISO 9001:2015CE-EMCUKCAGlobal Export

Model

EP-10-6A

Type

HEI

Engine

AMC 258 I6 / V6

Cap Color

Blue

App

Jeep CJ / YJ

Technical specifications

ParameterDetail
EP Model No.EP-10-6A
Product typeHEI Ignition Distributor — Complete Assembly
Vehicle applicationJeep CJ5, CJ7, Wrangler YJ; AMC CJ and V6 applications
EngineAMC 258 CID (4.2L) Inline-Six and AMC V6 variants
Replaces OEM3242155 / 3232648 / 5232525
IncludesDistributor Body, 65K Coil, Blue Cap (brass terminals), Rotor, Module, Adjustable Vacuum Advance
CertificationISO 9001:2015 · CE-EMC · UL · UKCA
BrandEP (Ever-Power)

The EP-10-6A is a complete HEI distributor for the Jeep CJ and early Wrangler YJ powered by the beloved AMC 258 inline-six (4.2L) and related AMC six-cylinder engines. The AMC 258 is one of the most durable and torquey inline-six engines ever installed in an off-road vehicle — its long stroke and massive low-end torque made the CJ5 and CJ7 formidable trail machines, and the engine's simplicity has allowed these vehicles to accumulate extraordinary mileage in demanding service.

Converting the AMC 258 from its original points or early electronic ignition to HEI is a popular upgrade in the Jeep CJ community for the same reasons it's popular in all classic vehicle applications: stronger spark, simplified wiring, elimination of external components, and freedom from the periodic adjustment that contact-point ignition requires. The EP-10-6A integrates the 65,000-volt coil into the cap for a clean, self-contained ignition system suited to the demanding off-road environments that CJ and Wrangler YJ owners routinely encounter.

Manufactured under ISO 9001:2015 quality management. Individual testing for AMC six-cylinder shaft specifications and module function.

EP high-precision ignition distributor production equipment

Key features

AMC 258 I6 CJ and Wrangler YJ coverage

Fits the AMC 258 inline-six in Jeep CJ5, CJ7, and Wrangler YJ — the engine that made these vehicles legendary off-road performers.

Simplified wiring for off-road use

Eliminating external ignition components reduces the number of wiring connections and components vulnerable to water immersion and vibration in off-road conditions.

65K coil for 258 trail performance

The AMC 258 produces its best performance with consistent high-energy spark — particularly important for engines running rich mixtures at low-RPM rock-crawling conditions.

Blue cap styling

Blue coordinates with popular Jeep CJ and Wrangler underhood presentations.

Vehicle fitment

MakeModelYearsEngine
JeepCJ5 / CJ71972-1990AMC 258 CID (4.2L) I6
JeepWrangler YJ1987-1990AMC 258 CID (4.2L) I6
JeepCJ5 / CJ71972-1981AMC 232 CID V6
AMCPassenger carsVariousAMC 232 / 258 I6

EP HEI distributor full series compatibility overview

Application scenarios

Jeep CJ5 and CJ7 HEI conversion

CJ5 and CJ7 owners upgrading their AMC 258 ignition for trail reliability choose the EP-10-6A for its self-contained design and simplified wiring.

Wrangler YJ performance upgrade

Early Wrangler YJ owners with the 258 I6 use the EP-10-6A to gain HEI ignition performance as a complement to other engine improvements.

Jeep off-road club supply

Off-road clubs and Jeep specialty shops stock the EP-10-6A for their CJ and Wrangler members as a recommended ignition upgrade.

Installation guide

Disconnect battery. Remove cap, note rotor position for AMC 258 firing order. Mark housing alignment on intake. Remove vacuum hose and connectors, remove hold-down, withdraw old distributor. Lower EP-10-6A maintaining rotor position reference. Connect BAT wire and vacuum advance. Set timing per AMC 258 specification with timing light. 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

More EP HEI distributors

ModelApplicationEngine
EP-10AJeep AMC V8 290-401AMC V8 290-401
EP-10CChevy SBC 262-400 / BBC 396-454SBC/BBC V8 Red
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

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.

EP ignition distributor manufacturing facility

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 planetary gearboxes 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-10-6A come with a cap, rotor, and coil?
Yes. The EP-10-6A 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 EP-10-6A fit both the early AMC 232 V6 and the later 258 inline-six?
The AMC 232 cubic inch V6 and the AMC 258 cubic inch inline-six have different distributor configurations. The EP-10-6A is primarily designed for the AMC 258 inline-six. The 232 CID V6 used in earlier Jeep CJ5 models has a different distributor drive and may require a different unit. Verify your engine size and OEM distributor number before ordering.
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-10-6A 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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