Ignition module

Volvo Penta ignition modules - Ignition Module spare parts

Volvo Penta ignition modules control the electrical ignition pulse output in the engine and ensure stable spark formation and combustion. Precisely matched modules according to reference number, engine type and year of manufacture ensure reliable ignition, reduced starting problems and smooth engine running. The structured assignment makes selecting the right ignition control component simple and precise.
Ignition module for Delco distributor 4 cyl. / V6 / V8, MD811637
Ignition module for Delco distributor 4 cyl. / V6 / V8, MD811637
article nr.03520

Mercruiser ref. no. 811637, OMC ref. no. 986650 and Volvo Penta ref. no. 3854003

51,37 EUR
incl. 19% VAT
Lieferung Thu 06. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Original spare part
Quicksilver ignition module Delco distributor 4 cyl. / V6 / V8, 8M6008208
Mercury-Mercruiser-Quicksilver
Quicksilver ignition module Delco distributor 4 cyl. / V6 / V8, 8M6008208
article nr.09860

Mercruiser ref. no. 802464, 804412, 811637, 811637001, 811637T, 81637002, 850487, 8M0123099, 8M6008208, OMC ref. no. 986650 and Volvo Penta ref. no. 3854003

205,89 EUR
incl. 19% VAT
Lieferung Thu 06. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Voltage regulator for Volvo Penta , MD847605
Voltage regulator for Volvo Penta , MD847605
article nr.09344

Volvo Penta ref. no. 843547 / 847605

92,21 EUR
incl. 19% VAT
Lieferung Thu 06. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
(Max quantity: 1 )
Ignition module for Volvo Penta V6 / V8 Vortec MD811637
Ignition module for Volvo Penta V6 / V8 Vortec MD811637
article nr.05058

Volvo Penta Ref. no. 3858984

116,68 EUR
incl. 19% VAT
Lieferung Thu 06. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Displaying 1 to 4 (of 4 products)
  • Over 15 years’ experience in the marine spare parts trade
    Over 15 years’ experience in the marine spare parts trade
  • Official Mercury & MerCruiser dealer
    Official Mercury & MerCruiser dealer
  • A wide range of boat engine spare parts from A to Z
    A wide range of boat engine spare parts from A to Z
  • Spare parts for Volvo Penta, MerCruiser, Yamaha, Honda, Suzuki and more
    Spare parts for Volvo Penta, MerCruiser, Yamaha, Honda, Suzuki and more
  • Fast delivery for maintenance, servicing and repairs
    Fast delivery for maintenance, servicing and repairs
  • Order boat spare parts conveniently online 24/7
    Order boat spare parts conveniently online 24/7

Function & importance of ignition modules

Ignition modules are central elements of the ignition system that control the electrical signals of the ignition coil and ensure that the high voltage reaches the spark plug at the right time. They improve starting behaviour and combustion stability and help to optimize performance, efficiency and running smoothness.

A functioning ignition module ensures

  • that the ignition spark is generated at the correct time

  • starting difficulties are reduced

  • engine runs are smooth and stable

  • Misfiring is prevented


Types & technical differences

Volvo Penta ignition modules vary depending on engine size and ignition system:

  • Modules suitable for 4-, 6- and 8-cylinder engines

  • Modules for classic EST and electronic ignition systems

  • Variants with integrated electronics to control the ignition coil

  • Modules according to various OEM references such as 3854003 or 3858984 are available, suitable for V6/V8 models and more

Differences relate to electrical parameters, connection types and control logic suitable for the respective ignition architecture.


Selection by reference number & engine type

The correct ignition module should be selected using the reference number, as the same engine classes use different modules depending on the year of manufacture. The reference number provides information about

  • Compatible ignition system design

  • Connection and electronics specifications

  • Fit to coil/distributor or ignition controller

Recommended selection logic:

  1. Take the reference number from the old part or from the spare parts catalog

  2. Determine engine type & year of manufacture

  3. Select suitable module according to OEM specifications

A structured comparison reduces incorrect orders and installation problems.


Installation & maintenance instructions

The following applies when installing an ignition module:

  • Disconnect the battery before working

  • Disconnect the old module wiring in a documented manner

  • Fasten the new unit firmly, but not overtightened

  • Connect plug contacts cleanly and without corrosion

  • After installation, test ignition and check possible error codes

Incorrect installation can lead to malfunctions or error codes in the control unit.


Diagnosis & typical fault patterns

Common signs of a defective ignition module:

  • Starting problems or delayed ignition

  • Unsteady idling

  • Misfiring / loss of power

  • Sporadic misfiring

  • Increased emissions

A test with diagnostic tools or an oscilloscope can help to differentiate between modular fault patterns and other components.