Ignitions and Electrical› Distributors, Magnetos and Crank Triggers

SIERRAMARINE

TIMER BASE, JOHNSON/EVINRUDE

$383.82

SKU: S08C 18-99417

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Sierra 18-99417 is a replacement timer base for Johnson and Evinrude 85, 88, 90, 100, 110, 115, and 140 HP 4-cylinder Cross Flow outboard engines from 1978-87 with twin power packs. It replaces OEM part numbers including Johnson/Evinrude 581812, 582041, 583127, 583128, 583376, 763783, and CDI 133-3376.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandSIERRAMARINE
Part NumberS08C 18-99417

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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