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Discontinued thruster
Sleipner SE170/250TC-IP (discontinued): specs, manual and parts
The Sleipner SE170/250TC-IP is a tunnel thruster. The motor sits inside the boat and turns a propeller in a tube through the hull. Sleipner has discontinued it. Its own product page said so when we read it on 1 October 2026.
This page stays up for the owners still running one. It holds the published figures, the part numbers, the manual and the last price we read. You will not find the unit in the thruster finder, the tool here that matches a unit to your boat, or on the compare page. If you need a new thruster, start with either of those.
The published figures
| Type | Tunnel, fixed mount |
|---|---|
| Thrust | 463 lb (210 kgf) |
| As the maker printed it | Thrust at 24V | 210kg / 463lbs; Thrust at 21V | 170kg / 375lbs |
| Voltage | 24 V |
| Motor | 8.8 kW |
| Tunnel diameter | 250 mm |
| Maker’s boat length | 49 to 72 ft |
| Part number | 88344324V |
| Last price we read | $8,019equipment only, defender.com, 28 August 2026. It may no longer be for sale there. |
| Manual | Sleipner’s manual for it |
Service parts
These are Sleipner’s own part numbers for the parts an owner replaces, where we could find them: the pin that drives the propeller, the propeller, the anode, the brushes, the switch gear, the fuse and the motor. We read them on 11 October 2026. The last column says how we know each one fits this model. Give the dealer your thruster’s serial number from its label when you order.
| Part | Part number | Sleipner’s name for it | How we know it fits |
|---|---|---|---|
| Drive pin (the pin that drives the propeller) | 9 1241 | Drive pin propeller SE120-300 | By the part’s name only. Confirm with your serial number.Sleipner describes it as fitting SE120 to SE170 units. This model is not on its list. |
| Anode | 20 1180 A | Anode kit (Al-Zn-In), for 215/300 mm gear legs | By the part’s name only. Confirm with your serial number. |
| Anode, zinc version | 20 1180 | Anode, zinc SE120/SE130/SE170/SP155/220/285 | By the part’s name only. Confirm with your serial number. |
| Gear leg gasket | 10 1312 | Gasket for gearleg/tunnel SE130/170/210 | Sleipner’s parts page lists this model |
| Motor brush kit | BRUSH-14K | Brush kit SP155 + SE150/170 | By the part’s name only. Confirm with your serial number.Sleipner asks for the thruster’s serial number with every brush kit order. |
| Main fuse | ANL 400 | Recommended fuse A | Sleipner’s page for this modelThe rating on Sleipner’s page for this model. The fuse holder is SMANLHOLD. |
| Replacement motor | 10 0102 24 | SE170 24V IP | Sleipner’s parts page lists this model |
What the manual and listings say
The ignition-protected build, for a boat with gasoline engines or tanks in the same space. Its page says 49 to 72 ft where the standard SE170's says 50 to 70. The page rates the motor 8.8 kW at a nominal 21 V. The dealer's spec table for this item printed thrust, power and tunnel figures that belong to a much smaller 125 mm unit.
The maker's own page is the one to trust. The page rates the brushed motor for two to three minutes' running at 20 C. The control panel switches itself off after about six minutes unused. Sleipner's FAQ wants the tunnel at least three quarters of its diameter below the surface, never less than half.
Replacement and close alternatives
The replacement: Sleipner E170 eVision. Sleipner’s own page for this model links it as the replacement.
These are Sleipner’s nearest current sizes by thrust, in any of its lines.
- Nearest below: Sleipner SE100/185T-IP, 256 lb, $6,300.
- Nearest above: Sleipner E240/250TC, 529 lb.
Other makers’ current units of the same style, for the same end, within a quarter of its published thrust:
- VETUS Bow Pro Boosted 210, 463 lb, $8,745.
- Max Power CT165, 408 lb, $3,684.
- Quick BTQ 250, 265 to 529 lb, $8,624 to $10,571.