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Distributor Assembly GM Delco EST Ignition for MerCruiser 3 0 817377 986653
$571.99
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$571.99
Regular price
Available to Order
This Distributor Assembly is a GM Delco EST Ignition distributor compatible with MerCruiser 3.0 marine engines and matches OEM Part# 817377 and 986653.
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I needed a forklift part and wasn’t sure which one fit. They asked for the model and serial number, got back to me quickly, and made sure I ordered the right one. Really helpful.
Randy W. — Verified customer
Product Overview
This Distributor Assembly delivers reliable ignition timing for MerCruiser 3.0 inboard and stern drive engines. Designed with GM Delco EST technology, it ensures consistent spark delivery and smooth engine operation. Boat owners and marine mechanics rely on this distributor for direct replacement of worn or failed units.
Key Features & Performance
- Direct replacement for MerCruiser 3.0 applications using GM Delco EST ignition
- Includes both OEM part numbers 817377 and 986653 for verified fitment
- Precision-ground shaft and corrosion-resistant housing for marine environments
- Integral EST module for reliable electronic spark advance
- Factory-tested assembly ensures plug-and-play installation
Fitment & Compatibility
- MerCruiser 3.0L (181 cid) 4-cylinder marine engines
- Replaces OEM distributors with part numbers 817377 and 986653
Common Uses
- Replacement of failed or worn distributors in MerCruiser 3.0 stern drive boats
- Maintenance and repair of inboard/outboard marine power systems
- Restoration of ignition performance in older MerCruiser-powered vessels
Technical Specifications
- Part Number(s): 817377, 986653
- Type: Distributor Assembly with Delco EST Ignition
- Application: MerCruiser 3.0L 4-Cylinder Marine
Frequently Asked Questions
Q: Will this distributor fit a 1995 MerCruiser 3.0? A: Yes, it is compatible with most MerCruiser 3.0L engines that originally used GM Delco EST ignition and require part numbers 817377 or 986653. Verify your existing distributor number before purchase.
Q: Does this include the cap and rotor? A: This is the complete distributor assembly with the EST module installed, but does not include a cap or rotor. Those components should be ordered separately if needed.
Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.