Precision Outboard Powerhead Rebuilds & Marine Parts

Authorized Parts & Rebuilds for Mercury • Johnson • Evinrude • Yamaha • Force • Chrysler

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Mercury 20 HP Switch Boxs

Shop OEM and aftermarket Switch Box for Mercury 20 HP outboard motors. BPS Marine supplies dependable replacement parts backed by years of outboard powerhead rebuilding experience.

Switch Boxs control ignition spark delivery and timing signals for Mercury 20 HP outboard motors.

Common Symptoms and Service Notes

  • No spark on one or more cylinders
  • Engine starts cold but loses spark when warm
  • Misfire, rough idle, or poor acceleration

Always compare part numbers, plug style, limiter details, and wiring configuration before ordering.

CDI Electronics Switch box

Switch box


Part # 114-4911

Switch box

This CDI Electronics Switch box is designed for 20 HP (200) Mercury/Mariner 1973-77 models Outboard Motors with Serial # 3537531 thru 4709592.

Replaces OEM part numbers:
0710P31, 25105, 4733A2, 4911A2, 4911A5, 4911A8.
$470.49
$453.40
Switch box


Part # 114-6222

Switch box

This CDI Electronics Switch box is designed for 20 HP Mercury/Mariner 1977-81 models Outboard Motors with Serial # 4709593 thru 5837436.

Replaces OEM part numbers:
4403787, 5837436, 6222A1, 6222A10, 6222A4, 6222A6, 6222A8, 99218.
$334.89
$304.75
Switch box


Part # 114-7452A3

Switch box

This CDI Electronics Switch box is designed for 20 HP Mercury/Mariner 1979-87 models Outboard Motors with Serial # 5705532 thru OB238463.

Replaces OEM part numbers:
5705532, 7452A, 7452A2, OB238463.
$220.09
$106.95
Switch box


Part # 5778

Switch box

This CDI Electronics Switch box is designed for 20 HP Mercury/Mariner 1980-97 models Outboard Motors with Serial # 5705532 thru OG760299.

Replaces OEM part numbers:
339-7452A1, 339-7452A7, 339-7452A8, 339-7452A9, 339-7452A10, 339-7452A11, 339-7452A13, 339-7452A14, 339-7452A15, 339-7452A19, 339-7452A21.
$250.77
$131.60
Switch box


Part # 114-4952A30

Switch box

This CDI Electronics Switch box is designed for 20 HP Mercury/Mariner 1994-98 models Outboard Motors with Serial # OG044027 thru OG760299.

Replaces OEM part numbers:
18495A14, 18495A16, 18495A17, 18495A20, 18495A21, 18495A30, 18495A9, 4952K1, 99230.
$428.19
$389.65
Switch box


Part # 114-5713

Switch box

This CDI Electronics Switch box is designed for 20 HP Mercury/Mariner 1998-2006 models Outboard Motors with Serial # OG760300 thru OT979999.

Replaces OEM part numbers:
855713A, 855713A3, 855713A4, 99222.
$305.59
$276.30
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