• 333-3213A3 Mercury Switch Box | Genuine Used Part
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333-3213A3 Mercury Switch Box | Genuine Used Part

333-3213A3 Mercury Switch Box | Genuine Used Part

🔥 50% off all Used Parts - while stocks last 🔥

$60.00 AUD
$120.00 AUD $60.00 AUD
Sale Sold out
Flat $14.99 shipping Australia-wide.

Out of stock

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

🔧 Product Description

Genuine Mercury Switch Box Assembly - Part Number: 333-3213A3

A genuine Mercury ignition switch box assembly used on selected early Mercury 4-cylinder Thunderbolt ignition systems. This 4-post switch box is associated with classic Mercury 500 / 50HP and Mercury 650 / 65HP two-stroke outboards and must be matched by original switch-box number and wiring layout.

⚙️ Key Features

  • Genuine Mercury switch box assembly
  • Correct Mercury part number 333-3213A3
  • Early 4-post Thunderbolt ignition switch box
  • Used on selected Mercury 50HP and 65HP 4-cylinder two-stroke engines
  • Red / white / blue / green 4-post wiring layout must match the original unit

🚤 Compatibility

Commonly used on

  • Early Mercury 4-cylinder two-stroke Thunderbolt ignition systems

Typically suits

  • Engine models:
  • Mercury 500 / 50HP 4-cylinder - 1968-1975
  • Mercury 500 / 50HP - serial 4357640 to 5531629
  • Mercury 50HP 4-cylinder Thunderbolt ignition
  • Mercury 650 / 65HP 4-cylinder - late-1960s applications
  • Mercury 65HP 4-cylinder Thunderbolt ignition
  • HP Range: commonly 50HP - 65HP
  • Engine Type: Mercury 4-cylinder two-stroke outboard with early Thunderbolt switch-box ignition
  • Year Range: Approximately 1968 - 1975 for common 50HP / 65HP applications
  • Serial Range: Mercury 500 / 50HP parts-family range includes serial 4357640 to 5531629; 65HP applications must be checked by original serial-numbered ignition diagram and 4-post switch-box wiring.

🔌 Function

The switch box stores and releases ignition energy to the coil circuit when triggered, allowing the engine to produce spark at the correct timing point.

⚠️ Common Signs of Failure

  • No spark
  • Weak or intermittent spark
  • Engine starts then loses spark
  • No-start after trigger, coil and wiring checks
  • Spark returns when switch box is substituted
  • Internal failure caused by age, heat or vibration
  • Incorrect spark output from damaged terminals or wiring

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 333-3213A3 current Mercury switch box assembly reference
  • 333-3213 related base switch box reference
  • 3213A3 formatted Mercury switch box reference

OEM / Related Numbers

  • 333-3213A3
  • 3333213A3
  • 3213A3
  • 333-3213
  • 3333213
  • Switch box assembly
  • Ignition switch box
  • 4-post switch box
  • Red / white / blue / green terminal layout

Aftermarket / Verified Equivalents

  • Pro Marine: 19052
  • Maxrules: 19052

📦 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 returns — if it's not right or you ordered the wrong part, tell us within 14 days of delivery and send it back in the condition you received it (return freight is at your cost; fitted parts can't be returned). Used parts are sale items, so a return may be limited to store credit. Full details in our Refunds & Returns policy.

What you get with this used part

  • A genuine part removed from an engine, drive or jet ski dismantled in our Kadina workshop, inspected before listing. The photos show the actual part on our shelf.
  • A 14-day return period if it is not right or you ordered the wrong part.
  • Used gearboxes are pressure-tested before dispatch and carry a 30-day repair warranty. Propellers are sold as-is and priced accordingly.
  • Not sure it fits? Send us your engine model and serial number or call 0412 532 984 and we will check before you buy.

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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