Mercury MerCruiser Delco HEI Distributor Ignition Module 811637001
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Mercury MerCruiser 811637001 is a genuine OEM distributor ignition module for Delco HEI ignition systems. Current Mercury dealer supersession references show 811637001 replaced by 8M6008208, and the current replacement is described as an Ignition Module Distributor Delco for GM-based MerCruiser engines using Delco HEI ignition.
Key Features
- Genuine Mercury Marine OEM part number 811637001, superseded to 8M6008208.
- Current replacement is specifically identified as a Delco HEI distributor ignition module.
- Fits GM 4-cylinder, V6, and V8 engines with Delco HEI ignition according to current Mercury dealer references.
- Current dealer listing shows GTIN 678633123078 for 8M6008208.
- Current shipping specs for the replacement are approximately 0.17 lb, 3.88 in. x 3.63 in. x 1.75 in.
Engine Compatibility
The strongest supportable fitment for 811637001 / 8M6008208 is MerCruiser GM-based 4-cylinder, V6, and V8 engines with Delco HEI ignition. Current Mercury dealer where-used references tie this module to applications including 3.0L GM 181 I/L4, while related Mercury and dealer references also place the same ignition-module family in 350 MAG MPI Ski, 500 EFI, and 575 SCi applications depending on serial range and distributor setup.
Serial Number Fitment Notice
Verify fitment by exact engine serial number and the correct distributor / ignition components parts diagram before ordering. With this part, the key match is the Delco HEI distributor system, because similar MerCruiser ignition parts can differ by distributor type, year range, and ignition-control setup.
When This Part Needs Replacement
This module is typically replaced when the ignition system loses spark, becomes intermittent, or diagnosis points to a failed distributor ignition module in the Delco HEI system. That guidance is a practical service inference based on the part's documented function as the distributor ignition module in the MerCruiser ignition assembly.
Installation Notes
Install this part only after confirming the correct MerCruiser distributor and ignition layout for the engine being serviced. Current distributor component diagrams place the replacement 8M6008208 in the same Delco HEI distributor assembly with related parts such as cap 811635T3 or 808483T3, rotor 8M6001254 / 8M6001252, coil 811639T, and distributor hardware.
Alternate/Superseded Part Numbers
Current Mercury supersession references show 8M6008208 as the replacement for 811637001. Related earlier Mercury module numbers in this same supersession family include 811637, 811637T, and 811637002.
Parts Desk Insight
With distributor modules like this, the important match is the ignition system type, not just the engine size. Confirming that the engine uses a Delco HEI distributor before ordering is the easiest way to avoid getting the wrong ignition module.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
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