★ Authorized Mercury® Repower Center · Riverside, CA · 4.7★ on 51 Reviews CALL (951) 299-8024 · Mon-Fri 8A-5P
Get a Quote
MerCruiser SEA 4.5L 250 B EC DTS EO 40450078U — MerCruiser sterndrive engine
SeaCore

MerCruiser SEA 4.5L 250 B EC DTS EO

250 HP4.5L V8
$19,450

The MerCruiser SEA 4.5L 250 B EC DTS EO delivers 250 HP of genuine Mercury power as a MerCruiser sterndrive engine, available and serviced at Gearhead Marine in Riverside, CA. Key specs: Bravo drive, FWC Closed cooling, DTS shift. This unit features SmartCraft digital controls engineering for reliable performance. Priced at $19,450; our certified technicians confirm fitment before you buy. Call or text (951) 299-8024 and reference part 40450078U for pricing, availability and additional photos.

Call for Quote · (951) 299-8024
Call before purchasing. Call/text for more photos.
Shipping is not included. Freight is quoted per engine and depends on your location and how the unit is crated, so it cannot be priced online. Call (951) 299-8024 for a shipping quote before you buy.

Full Specifications

Part Number40450078U
Horsepower250 HP
Engine4.5L
Drive TypeBravo
Riser Height0"
Cooling TypeFWC Closed
Corrosion ProtectionSeaCore (Saltwater)
Shift TypeDTS

Service & Reference — 4.5L

Mercury service reference diagrams for the 4.5L engine family — cooling, drain and service-point locations. These are reference illustrations to help you identify service points, not photographs of this specific unit. Call (951) 299-8024 to confirm anything before you buy.

4.5L raw-water-cooled engine cutaway
4.5L raw-water-cooled engine cutaway

Parts for This Engine

Look up any part for this engine in Mercury’s official Electronic Parts Catalog — exploded diagrams with genuine Mercury part numbers. Search by your serial number to get the exact catalog for your unit.

Found your part number? Call (951) 299-8024 and we’ll get it for you.

Open Mercury Parts Catalog →

Opens Mercury’s catalog in a new tab. Gearhead Marine is an independent authorized dealer; the catalog is operated by Mercury Marine.

Frequently Asked Questions

Is the MerCruiser SEA 4.5L 250 B EC DTS EO in stock?

Inventory moves quickly — call or text (951) 299-8024 to confirm current availability and lead time before you buy.

How much is the MerCruiser SEA 4.5L 250 B EC DTS EO?

This unit is priced at $19,450. Call (951) 299-8024 for the latest pricing, rigging and installation quote.

Do you install and rig this?

Yes — Gearhead Marine fully rigs and installs in Riverside, CA, with mobile service available.

More MerCruiser Sterndrive Engines

Related Models

Ready to Repower?

Tell us your boat and we’ll spec the perfect Mercury package. No pressure, all horsepower.

Request Your Free Quote