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SEI 90-421 – 76° V6 Aftermarket Lower Unit – Replacement for Yamaha Outboard 200–250HP 2/4 Stroke – Fits 20″, 25″, 30″ Shafts

Original price was: $1,206.45.Current price is: $1,149.00.

Yamaha 76 Degree 200-250 HP Outboard Lower Unit – ST90-421. Industry-leading lower unit replacement for Yamaha 76-degree V6 outboard engine. Ensures optimal performance, reliability, and quality at an affordable price.

Search your model no. for perfect fit

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Manufacturer Warranty: 3-Year

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Return Policy: 60-day, hassle-free returns

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Trusted by 6,000+ boaters across the USA

Description

Replaces most Yamaha 76 Degree V6

For application assistance:

Please find your engine model number and call 813-925-7127

The paint color is Black. You can paint it to match.

Not designed for Yamaha F250 four stroke 250 HP motors

90-421-A20 (1.81:1 Ratio / 20″ Shaft / RH Rotation)

This SE421 standard right-hand rotation gear case replaces gear cases on Yamaha 2 Stroke V6 3.1 and 3.2 Liter Engines.

  • VX200TLR Series:
    • 2005: VX200TLRD
    • 2004: VX200TLRC
    • 2003: VX200TLRB
    • 2002: VX200TLRA
    • 2001: VX200TLRZ
    • 2000: VX200TLRY
  • VX225TLR Series:
    • 2004: VX225TLRC
    • 2003: VX225TLRB
    • 2002: VX225TLRA
    • 2001: VX225TLRZ
    • 2000: VX225TLRY
  • V200/V225TLR Series:
    • 1999: V200TLRX, V225TLRX
    • 1998: V200TLRW, V225TLRW

90-421-A25 (1.81:1 Ratio / 25″ Shaft / RH Rotation)

This SE421 replaces the gear case on Yamaha V6 2 Stroke 3.1 and 3.2 Liter Engines with standard right-hand rotation.

  • Z250TXR Series:
    • 2005: Z250TXRD
    • 2004: Z250TXRC
    • 2003: Z250TXRB
  • SX225/SX250TXR Series:
    • 2003: SX225TXRB, SX250TXRB
    • 2002: SX225TXRA, SX250TXRA
    • 2001: SX225TXRZ, SX250TXRZ
    • 2000: SX225TXRY, SX250TXRY
  • S225/S250/V225TXR Series:
    • 1999: S225TXRX, S250TXRX, V225TXRX
    • 1998: S225TXRW, S250TXRW
    • 1997: S225TXRV, S250TXRV
    • 1996: S225TXRU, S250TXRU
  • 225/250TXR Series:
    • 1995: 225TXRT, 250TXRT
    • 1994: 225TXRS, 250TXRS
    • 1993: 250TXRR
    • 1992: 250TXRQ
    • 1991: 250TXRP
    • 1990: 250ETXD

90-421-A30 (1.81:1 Ratio / 30″ Shaft / RH Rotation)

This SE421 replaces lower units on Yamaha 2 Stroke V6 3.1 and 3.2 Liter Engines. Color is Black (can be painted to match).

  • Z250TUR Series:
    • 2005: Z250TURD
    • 2004: Z250TURC
    • 2003: Z250TURB
  • SX225/SX250TUR Series:
    • 2003: SX225TURB, SX250TURB
    • 2002: SX225TURA, SX250TURA
    • 2001: SX225TURZ, SX250TURZ
    • 2000: SX225TURY, SX250TURY
  • S225/S250TUR Series:
    • 1999: S225TURX, S250TURX
    • 1998: S225TURW, S250TURW
    • 1997: S225TURV, S250TURV
    • 1996: S225TURU, S250TURU
  • 225/250TUR Series:
    • 1995: 225TURT, 250TURT
    • 1994: 250TURS
    • 1993: 250TURR
    • 1992: 250TURQ
    • 1991: 250TURP

90-421-B25F (2:1 Ratio / 25″ Shaft / 4-Stroke / RH Rotation)

This SE421 replaces gear cases on Yamaha Four Stroke V6 200HP – 225HP Engines with a 2:1 Gear Ratio and 25 Inch Drive Shaft.

  • F200XA/TXR Series:
    • 2019-2011: F200XA
    • 2010-2006: F200TXR
    • 2005: F200TXRD
    • 2004: F200TXRC
    • 2003: F200TXRB
    • 2002: F200TXRA
  • F225XA/TXR Series:
    • 2018-2011: F225XA
    • 2010-2006: F225TXR
    • 2005: F225TXRD
    • 2004: F225TXRC
    • 2003: F225TXRB
    • 2002: F225TXRA

90-421-B30F (2:1 Ratio / 30″ Shaft / 4-Stroke / RH Rotation)

This SE421 replaces the gear case on Yamaha Four Stroke V6 200HP – 225HP Engines with a 30 Inch Drive Shaft.

  • F225TUR Series:
    • 2005: F225TURD
    • 2004: F225TURC
    • 2003: F225TURB
    • 2002: F225TURA

Additional information

Weight 65 lbs
Dimensions 65 × 37 × 10 in
Degree/Motor/Length

.1L&3.2L/Two Stroke V6/25" Shaft /1.8 Ratio/ RH Rotation, 3.1L&3.2L/Two Stroke V6/20" Shaft/1.8 Ratio/ RH Rotation, 3.1L&3.2L/Two Stroke V6/30" Shaft /1.8 Ratio/ RH Rotation, 4Stroke/25" Shaft/2:1 Ratio/RH Rotation, 4Stroke/30" Shaft/2:1 Ratio/RH Rotation

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