MerCruiser and Volvo Penta | Recmar

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

Name: Delco EST Ignition Module for MerCruiser, Volvo Penta & OMC - REC3854003
Brand: Recmar
SKU: REC3854003
Price: 58.12 GBP
Availability: InStock

REC3854003

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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.

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

£58.12 GBP

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