Yamaha propellers · Virginia Beach

Yamaha XTO EC propeller: sizes, part numbers and fit.

The XTO EC is a three-blade stainless prop Yamaha lists for XTO Offshore rigs that have a ventilation problem, with extra cup at the trailing edge for bite. Its table runs from 17 to 25 pitch at diameters between 16 1/8 and 16 7/8 inches, and every pitch is listed in right- and left-hand rotation on Yamaha's SDS hub.

Listed by Yamaha as XTO EC® (SDS®)

Material
stainless steel
Blades
three
Hub
SDS (Shift Dampener System)
Rotation
Right-hand and Left-hand
Diameter
16 1/8 to 16 7/8 in
Pitch
17 to 25
Yamaha

Sizes

10 sizes
as Yamaha lists them.

Part numbers, specs and features: Yamaha, read from yamahaoutboards.com/propellers/large-boats on 2026-10-05. Yamaha updates its listings; we confirm the part number when we quote.

Yamaha XTO EC propeller sizes and Yamaha part numbers
Diameter (in)PitchRotationHubPart number
16 7/817RHSDS*6KN-45970-00
16 7/817LHSDS*6KP-45970-00
16 5/820RHSDS*6KN-45976-00
16 5/820LHSDS*6KP-45976-00
16 3/821RHSDS*6KN-45978-00
16 3/821LHSDS*6KP-45978-00
16 1/824RHSDS*6KN-45972-00
16 1/824LHSDS*6KP-45972-00
16 1/825RHSDS*6KN-45974-00
16 1/825LHSDS*6KP-45974-00
  • RH is right-hand rotation, LH left-hand. Rows are printed exactly as on Yamaha's table.
  • SDS is Yamaha's Shift Dampener System hub. The asterisk is Yamaha's own mark.

What it's for

The XTO EC
as Yamaha describes it.

  • For specific XTO Offshore applications where ventilation is a problem.
  • Diameters up to 16 7/8 inches; pitches 17 to 25.
  • Extra trailing-edge cup for better grip.

Yamaha lists it for

Engines Yamaha names for it

From Yamaha's description: For specific XTO Offshore applications where ventilation is a problem.

Common questions

Yamaha XTO EC
questions, answered.

Yamaha's size table lists 10 sizes of the Yamaha XTO EC, from 16 1/8 to 16 7/8 inches in diameter, with pitches from 17 to 25. Each size has its own Yamaha part number, listed in the table on this page.

Yes. Yamaha lists left-hand (LH) as well as right-hand (RH) sizes of the Yamaha XTO EC. The table on this page shows which pitches come in each rotation.

Every Yamaha XTO EC size on Yamaha's table uses Yamaha's Shift Dampener System (SDS) hub, which Yamaha says absorbs the shock and noise of shifting into gear.

Yamaha lists the Yamaha XTO EC as a three-blade stainless steel propeller.

From Yamaha's description of the Yamaha XTO EC: For specific XTO Offshore applications where ventilation is a problem. On this site that points to the Yamaha XF450 and Yamaha XF425. The size for a given boat still has to be picked from the table.

Ready when you are.

Get a quote
on a Yamaha prop.

Tell us the boat and the engine, and we'll quote the Yamaha XTO EC size for it. We answer same business day.

Just leave a phone or an email — whichever's easier.

Call (757) 464-4600Text