• 79-816933A1 Quicksilver Temp Gauge | Genuine Used Part
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79-816933A1 Quicksilver Temp Gauge | Genuine Used Part

79-816933A1 Quicksilver Temp Gauge | Genuine Used Part

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$40.00 AUD
$80.00 AUD $40.00 AUD
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✓ Authorised Volvo Penta Dealer · Genuine used marine parts · Ships Australia-wide

🔧 Product Description

Genuine Quicksilver QSI Water Temperature Gauge - Part Number: 79-816933A1

A genuine used Quicksilver QSI analog water-temperature gauge with a 100-240°F scale for compatible 12-volt marine temperature-sender systems.

The large QSI instrument monitors engine cooling temperature through a matched resistive sender. Gauge and sender calibration must correspond for a reliable temperature reading.

⚙️ Key Features

  • Genuine Quicksilver OEM QSI temperature gauge
  • Correct Mercury part number 79-816933A1
  • 100-240°F water-temperature scale
  • Approximately 3-3/8-inch / 86 mm instrument class
  • Illuminated analog display for 12-volt systems

🚤 Compatibility

Commonly used on

  • Mercury and Mariner outboard temperature instrumentation
  • MerCruiser petrol inboard and sterndrive cooling systems using a matching sender

Typically suits

  • Engine models:
  • Mercury and Mariner outboards fitted with a compatible resistive water-temperature sender
  • MerCruiser petrol sterndrive engines fitted with a compatible 100-240°F sender
  • MerCruiser petrol inboard engines fitted with a compatible 100-240°F sender
  • 12-volt marine dashboards requiring the larger QSI instrument opening
  • HP Range: Not engine-specific; sender and gauge calibration controlled
  • Engine Type: Mercury / Mariner outboard and MerCruiser petrol marine engine
  • Year Range: Approximately late 1980s - 1990s

🔌 Function

The gauge displays engine cooling temperature by interpreting resistance from the installed temperature sender. It helps the operator identify normal warm-up and abnormal overheating conditions.

⚠️ Common Signs of Failure

  • Gauge remains cold after the engine reaches operating temperature
  • Needle immediately moves to the hot end of the scale
  • Reading fluctuates because of a poor sender ground or loose terminal
  • Gauge and sender calibration mismatch produces an inaccurate reading
  • Backlighting or internal needle movement fails

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 79-816933A1 current known OEM service reference
  • 816933A1 original unprefixed Mercury reference

OEM / Related Numbers

  • 79-816933A1
  • 79816933A1
  • 816933A1
  • 745061064126
  • Quicksilver QSI 100-240°F temperature gauge

Aftermarket / Verified Equivalents

  • Sierra: 62729P - Premier Pro 100-240°F temperature gauge
  • Veethree / Teleflex: 84590F - 120-240°F temperature gauge
  • Faria: 12812 - Euro Black 100-250°F temperature gauge
  • Faria: 13704 - Chesapeake Black 100-250°F temperature gauge

📦 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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