• 816761Q6 Mercruiser Spark Plug Kit | Genuine Used Part
  • 816761Q6 Mercruiser Spark Plug Kit | Genuine Used Part - photo 2 of 5
  • 816761Q6 Mercruiser Spark Plug Kit | Genuine Used Part - photo 3 of 5
  • 816761Q6 Mercruiser Spark Plug Kit | Genuine Used Part - photo 4 of 5
  • 816761Q6 Mercruiser Spark Plug Kit | Genuine Used Part - photo 5 of 5
1 5

816761Q6 Mercruiser Spark Plug Kit | Genuine Used Part

816761Q6 Mercruiser Spark Plug Kit | Genuine Used Part

$10.00 AUD
$10.00 AUD
Sale Sold out
Shipping calculated at checkout.

Low stock: 1 left

✓ Authorised Volvo Penta Dealer · Genuine used marine parts · Ships Australia-wide

🔧 Product Description

Genuine MerCruiser Spark Plug Wire Set - Part Number: 84-816761Q6

A genuine MerCruiser spark plug wire set used on MerCruiser 3.7L / 224ci four-cylinder engines. This wire set cross-references with Sierra 18-8808-2 and is used on 470-family engines including 165HP, 170HP and 185HP conventional ignition applications.

⚙️ Key Features

  • Genuine MerCruiser spark plug wire kit
  • Correct OEM part number 84-816761Q6
  • Also cross-referenced with 84-813720A6
  • Used on MerCruiser 3.7L / 224ci 4-cylinder engines
  • Conventional ignition wire set

🚤 Compatibility

Commonly used on

  • MerCruiser 3.7L / 224ci 4-cylinder engines
  • MerCruiser 470-family conventional ignition systems

Typically suits

  • MerCruiser 470 3.7L 4-cylinder
  • MerCruiser 165HP 3.7L / 224ci
  • MerCruiser 170HP 3.7L / 224ci
  • MerCruiser 185HP 3.7L / 224ci
  • MerCruiser 470 / 488 type 4-cylinder engines
  • HP Range: 165HP / 170HP / 185HP
  • Engine Type: MerCruiser 3.7L 4-cylinder gasoline engine with conventional ignition
  • Year Range: 1985-1989 commonly listed for Sierra 18-8808-2 applications; engine-family controlled outside those years
  • Serial Note: Confirm by engine model, distributor style and wire routing before installation.

🔌 Function

The spark plug wire set carries high-voltage spark from the distributor and coil circuit to the spark plugs while maintaining correct routing and insulation.

⚠️ Common Signs of Failure

  • Misfire under load
  • Crossfire between leads
  • Hard starting
  • Rough idle
  • Visible spark arcing in the dark
  • Cracked boots or hardened wires
  • Corroded terminals inside plug boots

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 84-813720A6 / 84-816761Q6 current wire set family reference

OEM / Related Numbers

  • 816761Q6
  • 84-816761Q6
  • 84-813720A6
  • Spark plug wire set
  • Marine ignition wire set
  • 3.7L / 224ci wire kit

Aftermarket / Verified Equivalents

  • Sierra 18-8808-2
  • Sierra 18-8808

📦 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.

View full details