• 826800A9 Mercury Detonation Controller | Genuine Used Part
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826800A9 Mercury Detonation Controller | Genuine Used Part

826800A9 Mercury Detonation Controller | Genuine Used Part

$270.00 AUD
$270.00 AUD
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🔧 Product Description

Genuine Mercury Detonation Controller Assembly - Part Number: 826800A9

A genuine Mercury detonation controller assembly used on selected Mercury 2.5L V6 EFI two-stroke ignition systems. This module forms part of the knock / detonation protection circuit and helps manage ignition timing response when detonation is detected.

⚙️ Key Features

  • Genuine Mercury detonation controller assembly
  • Correct Mercury part number 826800A9
  • Related to 826800A7 and 826800A8 detonation-control references
  • Used on selected Mercury 2.5L V6 EFI two-stroke applications
  • Must be matched by engine serial number, wiring layout and ignition-system configuration

🚤 Compatibility

Commonly used on

  • Mercury V6 EFI two-stroke detonation-control systems

Typically suits

  • Engine models:
  • Mercury 150 EFI Pro Max 2.5L detonation-control applications where specified
  • Mercury 200 EFI Pro Max 2.5L detonation-control applications where specified
  • Mercury 200 EFI Super Magnum 2.5L detonation-control applications where specified
  • Mercury V-150 MAG / EFI applications using detonation controller modules
  • Mercury V-150 XRI EFI applications using detonation controller modules
  • Mercury V-175 SKI / MAG / EFI applications using detonation controller modules
  • Mercury V-175 XRI EFI applications using detonation controller modules
  • Mercury V-200 MAG / EFI applications using detonation controller modules
  • Mercury V-200 XRI EFI applications using detonation controller modules
  • Mercury V-220 Laser EFI applications using detonation controller modules
  • Mercury 200HP EFI 2-stroke applications around 2000 model year using 826800A9
  • Mercury 200HP EFI 2-stroke serial 0T148227 donor-family reference using 826800A9
  • HP Range: commonly 150HP - 220HP Mercury V6 EFI two-stroke applications where specified
  • Engine Type: Mercury 2.5L V6 EFI two-stroke outboard
  • System Type: Detonation / knock protection control module
  • Serial Note: Confirm engine serial number, detonation sensor, switch-box bias circuit and ignition module layout before installation.

🔌 Function

The detonation controller monitors detonation-related input and interfaces with the ignition system to help protect the engine from damaging knock by altering ignition control when required.

⚠️ Common Signs of Failure

  • Detonation-control fault after sensor and wiring checks
  • Unstable timing response
  • Engine warning or performance reduction related to knock circuit
  • Intermittent loss of timing control
  • Fault isolated to detonation module after switch-box and harness testing
  • Heat or vibration-related module failure
  • Corrosion or broken wires at controller plug

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 826800A9 later detonation controller reference
  • 826800A8 earlier / related detonation controller reference
  • 826800A7 earlier / related detonation controller reference

OEM / Related Numbers

  • 826800A9
  • 826800A8
  • 826800A7
  • Detonation controller assembly
  • Detonation control module
  • Knock control module
  • Related Mercury detonation sensor circuit reference
  • Related Mercury V6 timing / advance control family reference

Aftermarket / Verified Equivalents

  • No aftermarket equivalent

📦 Condition

  • Genuine used part
  • Removed from running engine where applicable
  • In good working condition unless otherwise stated

Shipping & Delivery

Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.

Returns & Warranty

14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in the condition you received it for a refund or exchange. Full details in our Refunds & Returns policy.

Not sure this fits?

Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.

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