• Black ignition module showing two plug connections and two metal pins at the top.
  • Black ignition module showing two plug connections and two metal pins at the top.

MerCruiser and Volvo Penta | Recmar

Delco EST Ignition Module for MerCruiser, Volvo Penta & OMC - REC3854003

REC3854003

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£58.12 GBP
£58.12 GBP
Tax included. Shipping calculated at checkout.
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Product Specifications and Features

REC3854003 is a Recmar replacement ignition module for marine GM engines fitted with Delco EST electronic distributor ignition. It is used across many MerCruiser, Volvo Penta and OMC stern drive and inboard petrol engines.

This module replaces the common Volvo Penta 3854003 and MerCruiser 811637 ignition module family. It is intended for Delco EST / Delco HEI-style marine distributor systems used on compatible 4-cylinder, V6 and V8 engines.

It is not a Thunderbolt ignition module and it is not an ECM/PCM control unit.

 

Key Specifications

Spec Details
Recmar SKU REC3854003
Product type Ignition control module
Ignition system Delco EST / Delco HEI-style marine distributor
Engine type GM marine petrol engines
Cylinder applications 4-cylinder, V6 and V8
Main OEM reference Volvo Penta / OMC 3854003

 

Engine Compatibility

Engine family Models / applications Notes
GM 3.0L 4-cylinder MerCruiser, Volvo Penta, OMC applications with Delco EST Distributor-module applications only
GM 4.3L V6 MerCruiser, Volvo Penta, OMC applications with Delco EST Match by ignition system and OEM number
GM small block V8 5.0L / 5.7L applications with Delco EST Not for Thunderbolt ignition
GM big block V8 7.4L / 8.2L applications with Delco EST Use where 3854003 / 811637 module is specified

 

OEM and Cross References

Brand Part number Notes
Recmar REC3854003 Aftermarket replacement
Volvo Penta 3854003 OEM reference
OMC / Johnson / Evinrude 3854003 OEM reference
MerCruiser 811637 OEM reference
MerCruiser 811637T OEM reference
MerCruiser 811637001 OEM reference
MerCruiser 8M0123099 Replacement reference
MerCruiser 8M6008208 Replacement reference
Sierra 18-5107-1 Aftermarket equivalent
Crusader / PCM R116014 Cross reference

 

Attributes

Field Value
Brand Recmar
MPN REC3854003
Product category Marine Ignition Module
Fits brand MerCruiser, Volvo Penta, OMC
Fits ignition system Delco EST
Replaces OEM 3854003, 811637, 811637T
Condition New

 

Important Fitment Notes

Check before ordering Why it matters
Delco EST distributor This module is only for engines using the Delco EST ignition layout
Thunderbolt ignition MerCruiser Thunderbolt systems use different ignition components
ECM/PCM systems This part is the distributor module, not the engine computer
OEM number The safest fitment route is matching 3854003, 811637 or 18-5107-1

Shipping Information

All orders ship from the UK. Orders placed Monday–Thursday before 12:00pm are processed same day. Orders placed Friday after 12:00pm through Sunday are processed the following Monday. Processing times vary by stock location.

Out of stock items can be back-ordered with a typical 3–4 week lead time.

If an item shows "Dispatch Available Today" and you order after 2pm UK time, processing begins the next business day.

All times are in UK BST.

Notice: Due to ongoing conflicts impacting logistics, some deliveries or re-stocking may take a little longer than expected. We're working to get your order to you as quickly as possible.
Delco EST Ignition Module for MerCruiser, Volvo Penta & OMC - REC3854003

£58.12 GBP

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