Description
Sierra 18-5431 marine rotor assembly, v8. Fits: GM V-8 Engines With Thunderbolt IV & V Ignition. Replaces: GLM 71080, Mallory 9-29200, Mercruiser Stern Drive 13524A5, 13524T1, 13524A1, 13524A3, 19405A3, 90576A2.
About SierraSierra provides premium-quality aftermarket replacements for over 6,000 marine parts, tools, and components. Sierra products are engineered to meet or exceed OEM standards, and stand up in harsh marine environments. Every new Sierra part comes with a limited lifetime warranty that covers the useful life of the product against any defects in workmanship and materials.
![Xantrex C-Series Solar Charge Controller – 40 Amps [C40]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/xantrex-c-series-solar-charge-controller-40-amps-c40.webp)
![Ancor Premium Electrical Tape – 3/4″ x 66′ – Orange[334066]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/ancor-premium-electrical-tape-3-4-x-66-orange-334066.webp)
![Ocean Signal RescueME EDF1 Electronic Distress Flare – 7 Mile Range[750S-01710]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/ocean-signal-rescueme-edf1-electronic-distress-flare-7-mile-range-750s-01710.webp)
![Blue Sea 1455 4 Position Switch CLB Square[1455]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/blue-sea-1455-4-position-switch-clb-square-1455.webp)
![Blue Sea 7605 BatteryLink Charger – 10Amp – 2-Bank[7605]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/blue-sea-7605-batterylink-charger-10amp-2-bank-7605.webp)
![Shadow-Caster Accent Lighting Flex Strip 8′ Terminated w/20′ of Lead Wire[SCM-AL-LED-8]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/shadow-caster-accent-lighting-flex-strip-8-terminated-w-20-lead-wire-scm-al-led-.webp)
![Jabsco HotShot HD4 Heavy Duty Washdown Pump – 24V – 4 GPM – 60 PSI [Q402J-118N-3A]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/jabsco-hotshot-hd4-heavy-duty-washdown-pump-24v-4-gpm-60-psi-q402j-118n-3a.webp)