• 22863786A1 Mercury MerCruiser T Fitting Exhaust Drain Valve | Genuine Quicksilver OEM Part
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22863786A1 Mercury MerCruiser T Fitting Exhaust Drain Valve | Genuine Quicksilver OEM Part

22863786A1 Mercury MerCruiser T Fitting Exhaust Drain Valve | Genuine Quicksilver OEM Part

$79.00 AUD
$79.00 AUD
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🔧 Product Description

Genuine Quicksilver T Fitting Exhaust Drain Valve - Part Number: 22-863786A1

Genuine Quicksilver/Mercury MerCruiser exhaust manifold drain T fitting assembly used in the raw-water drain system on selected MerCruiser MPI V6 and V8 petrol engines. This fitting is fitted into the exhaust manifold / elbow drain circuit and provides a serviceable drain point for removing cooling water from the exhaust system during flushing, winterisation, storage or routine maintenance.

⚙️ Key Features

  • Genuine Quicksilver/Mercury OEM fitting assembly
  • Exhaust manifold drain T fitting with drain valve function
  • Designed for selected MerCruiser MPI V6 and V8 petrol engines
  • Commonly used on 4.3L, 5.0L, 5.7L / 350 MAG and 6.2L MPI exhaust drain systems
  • Helps drain raw water from the exhaust manifold circuit for maintenance and freeze protection
  • Direct replacement for the original MerCruiser exhaust drain fitting where 22-863786A1 is specified

🚤 Compatibility

Commonly used on

  • Mercury MerCruiser MPI V6 and V8 petrol exhaust manifold drain systems
  • MerCruiser standard cooling and selected closed-cooling exhaust manifold drain assemblies
  • MerCruiser dry-joint exhaust manifold drain systems where 22-863786A1 is specified

Typically suits

  • Engine models:
  • MerCruiser 4.3L MPI Alpha / Bravo, serial range 0M300000 - 0M614999
  • MerCruiser 4.3L MPI Alpha / Bravo, serial range 0W310000 - 0W649999
  • MerCruiser 4.3L MPI Alpha / Bravo, serial range 0W650000 - 0W658582
  • MerCruiser 4.3L MPI Alpha / Bravo, serial 0W658583
  • MerCruiser 4.3L MPI Alpha / Bravo, serial range 0W658584 - 1A030367
  • MerCruiser 4.3L MPI Alpha / Bravo, serial range 1A030368 - 1A030369
  • MerCruiser 4.3L MPI Alpha / Bravo, serial range 1A030370 - 1A063239
  • MerCruiser 4.3L MPI Alpha / Bravo, serial range 1A063240 and up
  • MerCruiser 4.3L MPI Alpha / Bravo EC, serial range 1A637496 and up
  • MerCruiser 5.0L MPI Alpha / Bravo, serial range 0M300000 - 0M599999
  • MerCruiser 5.0L MPI Alpha / Bravo, serial range 0M600000 - 0W059999
  • MerCruiser 5.0L MPI Alpha / Bravo, serial range 0W060000 - 0W309999
  • MerCruiser 5.0L MPI Alpha / Bravo, serial range 0W310000 - 0W649999
  • MerCruiser 5.0L MPI Alpha / Bravo, serial range 0W650000 - 1A299999
  • MerCruiser 5.0L MPI Alpha / Bravo, serial range 1A300000 - 1A611927
  • MerCruiser 5.0L MPI Alpha / Bravo, serial range 1A611928 - 1A623184
  • MerCruiser 5.0L MPI Alpha / Bravo, serial range 1A623185 and up
  • MerCruiser 5.0L MPI Alpha / Bravo EC, serial range 1A300000 - 1A611927
  • MerCruiser 5.0L MPI Alpha / Bravo EC, serial range 1A611928 - 1A623184
  • MerCruiser 5.0L MPI Alpha / Bravo EC, serial range 1A623185 and up
  • MerCruiser 350 MAG MPI Alpha / Bravo, serial range 0M300000 - 0M599999
  • MerCruiser 350 MAG MPI Alpha / Bravo, serial range 0M600000 - 0W059999
  • MerCruiser 350 MAG MPI Alpha / Bravo, serial range 0W060000 - 0W309999
  • MerCruiser 350 MAG MPI Alpha / Bravo, serial range 0W310000 - 0W649999
  • MerCruiser 350 MAG MPI Alpha / Bravo, serial range 0W650000 - 1A299999
  • MerCruiser 350 MAG MPI Alpha / Bravo, serial range 1A300000 - 1A611927
  • MerCruiser 350 MAG MPI Alpha / Bravo, serial range 1A611928 - 1A623184
  • MerCruiser 350 MAG MPI Alpha / Bravo, serial range 1A623185 and up
  • MerCruiser 350 MAG MPI Alpha / Bravo EC, serial range 1A300000 - 1A611927
  • MerCruiser 350 MAG MPI Alpha / Bravo EC, serial range 1A611928 - 1A623184
  • MerCruiser 350 MAG MPI Alpha / Bravo EC, serial range 1A623185 and up
  • MerCruiser 350 MAG MPI Horizon Alpha / Bravo, serial range 0M300000 - 0M599999
  • MerCruiser 350 MAG MPI Horizon Alpha / Bravo, serial range 0M600000 - 0W059999
  • MerCruiser 350 MAG MPI Horizon Alpha / Bravo, serial range 0W060000 - 0W309999
  • MerCruiser 350 MAG MPI Horizon Alpha / Bravo, serial range 0W310000 - 0W649999
  • MerCruiser 350 MAG MPI Horizon Alpha / Bravo, serial range 0W650000 - 1A299999
  • MerCruiser 350 MAG MPI Horizon Alpha / Bravo EC, serial range 1A300000 - 1A611927
  • MerCruiser 350 MAG MPI Horizon Alpha / Bravo EC, serial range 1A611928 - 1A623184
  • MerCruiser 350 MAG MPI Horizon Alpha / Bravo EC, serial range 1A623185 and up
  • MerCruiser 350 MAG MPI MIE, serial range 0M310000 - 0M316999
  • MerCruiser 350 MAG MPI MIE, serial range 0M317000 - 0M398371
  • MerCruiser 350 MAG MPI MIE, serial range 0M398372 - 0W389999
  • MerCruiser 350 MAG MPI MIE, serial range 0W390000 - 0W689999
  • MerCruiser 350 MAG MPI MIE, serial range 0W690000 - 1A089999
  • MerCruiser 350 MAG MPI Horizon MIE, serial range 0M310000 - 0M316999
  • MerCruiser 350 MAG MPI Horizon MIE, serial range 0M317000 - 0M398371
  • MerCruiser 350 MAG MPI Horizon MIE, serial range 0M398372 - 0W389999
  • MerCruiser 350 MAG MPI Horizon MIE, serial range 0W390000 - 0W689999
  • MerCruiser 350 MAG MPI Horizon MIE, serial range 0W690000 - 1A089999
  • MerCruiser 350 MAG MPI Ski, serial range 0M300000 - 0M316999
  • MerCruiser 350 MAG MPI Ski, serial range 0M317000 - 0W689999
  • MerCruiser 5.7L MPI MIE, serial range 1A090000 - 1A092168
  • MerCruiser 5.7L MPI MIE, serial range 1A092169 and up
  • MerCruiser 5.7L MPI Horizon MIE, serial range 1A090000 - 1A092168
  • MerCruiser 5.7L MPI Horizon MIE, serial range 1A092169 and up
  • MerCruiser 5.7L MPI TowSport with Gen III, serial range 1G400000 - 1G499999
  • MerCruiser 6.2L MPI Ski, serial range 0M317000 - 0W689999
  • MerCruiser MX 6.2L MPI Bravo, serial range 0M300000 - 0M599999
  • MerCruiser MX 6.2L MPI Bravo, serial range 0M600000 - 0W059999
  • MerCruiser MX 6.2L MPI Bravo, serial range 0W060000 - 0W309999
  • MerCruiser MX 6.2L MPI Bravo, serial range 0W310000 - 0W649999
  • MerCruiser MX 6.2L MPI Bravo, serial range 0W650000 - 1A299999
  • MerCruiser MX 6.2L MPI Horizon Bravo, serial range 0M300000 - 0M599999
  • MerCruiser MX 6.2L MPI Horizon Bravo, serial range 0M600000 - 0W059999
  • MerCruiser MX 6.2L MPI Horizon Bravo, serial range 0W060000 - 0W309999
  • MerCruiser MX 6.2L MPI Horizon Bravo, serial range 0W310000 - 0W649999
  • MerCruiser MX 6.2L MPI Horizon Bravo, serial range 0W650000 - 1A299999
  • MerCruiser MX 6.2L MPI MIE, serial range 0W690000 - 1A089999
  • MerCruiser MX 6.2L MPI Horizon MIE where fitted with the matching exhaust manifold drain assembly
  • MerCruiser Black Scorpion 350 MAG MPI where fitted with the matching exhaust manifold drain assembly
  • MerCruiser Black Scorpion MX 6.2L MPI where fitted with the matching exhaust manifold drain assembly
  • MerCruiser Scorpion 350 EC where fitted with the matching exhaust manifold drain assembly
  • MerCruiser Scorpion 377 HO EC where fitted with the matching exhaust manifold drain assembly
  • MerCruiser 350 MPI Alpha reman, serial range 1G400000 - 1G499999
  • MerCruiser 383 MAG Stroker reman, serial range 1G400000 - 1G499999
  • MerCruiser 383 MAG Stroker Bravo reman, serial range 1G400000 - 1G499999
  • HP Range: Approximately 190HP - 377HP, depending on engine package
  • Engine Type: MerCruiser petrol MPI V6 / V8 stern drive, inboard and tow-sport exhaust manifold drain system
  • Year Range: Approximately 2001 onwards, depending on engine model, serial number and cooling configuration

🔌 Function

The exhaust drain T fitting provides a drain point in the MerCruiser exhaust manifold water circuit. It allows cooling water to be drained from the manifold and elbow area during service, storage, flushing or freeze-protection procedures. A correctly functioning drain fitting helps prevent trapped water, corrosion, cracking from freezing and poor drainage during maintenance.

⚠️ Common Signs of Failure

  • Water leaking from the exhaust manifold drain fitting
  • Cracked, brittle or heat-damaged fitting body
  • Drain valve blocked with salt, sand or corrosion
  • Exhaust manifold not draining correctly during service
  • Difficulty winterising or flushing the exhaust water circuit
  • Visible damage or missing drain fitting components

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • No available supersession chain

OEM / Related Numbers

  • 22-863786A1
  • 863786A1
  • 22863786A1
  • 22-05158 related drain T fitting reference
  • 25-864701 related O-ring used in matching exhaust manifold drain assemblies

Aftermarket / Verified Equivalents

  • REC: REC22-863786A1
  • EMP: 22-05158

📦 Condition

  • Genuine Quicksilver part
  • Brand new
  • Supplied in original or equivalent packaging

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 new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. 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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