Description
Boat part number 1115704 is a new electric swim platform step hinge bracket for 2021, 220S Cobalt Boats, part number 407309 .
This swim platform step hinge is constructed out of polished stainless steel. It measures approximately 41″ W x 10″ H x 17″ D overall when deployed and 41″ W x 6 3/4″ H x 13 1/2″ D when stowed. See photos for additional measurements.
Please check with your local boat brand dealer for boat / brand / model / year cross-referencing compatibilities.
Tag reads: KIT, E-STEP 22S’21
Specifications:
- Boat Manufacturer: Cobalt
- Model: 220S
- Year: 2021
- Part Number: 407309
- Material: Stainless Steel
- Color: Silver
- Finish: Polished
- Deployed Dimensions: 41″ W x 10″ H x 17″ D
- Stowed Dimensions: 41″ W x 6 3/4″ H x 13 1/2″ D
- Mounts: (14) mounting holes


![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)

![Presta PACE Heavy Cut Compound – 32oz [133132]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/presta-pace-heavy-cut-compound-32oz-133132.webp)
![Jabsco Mag Drive Centrifugal Pump – 14GPM – 110V AC[436979]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/jabsco-mag-drive-centrifugal-pump-14gpm-110v-ac-436979.webp)
![Sudbury Elastomeric Marine Sealant – 10oz Cartridge – White [300]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/sudbury-elastomeric-marine-sealant-10oz-cartridge-white-300.webp)
![SmartPlug 50 Amp 50 Dual Configuration Cordset w/Marina Park Power End [C50504]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/smartplug-50-amp-50-dual-configuration-cordset-w-marina-park-power-end-c50504.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)