SEI 90-416 – 90° Aftermarket Lower Unit – Replacement for Yamaha Outboard 150–200HP 2/4 Stroke – Fits 20″ & 25″ Shafts –

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

(14 customer reviews)
Use the coupon code WELCOME5 at checkout to get 5% off on your first order

“Yamaha 90 Degree 150-200 HP Outboard Lower Unit (416) – A brand-new, high-performance lower unit replacing Yamaha 90-degree V6 2-stroke up to 200 HP and some inline 4-cylinder 4-stroke 150 HP outboard motors, ensuring quality and efficiency.”

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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 90 Degree V6 2-Stroke and some inline 4 cylinder 4-Stroke engines

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

90-416-A20 (1.86 Ratio / 20″ Shaft / RH Rotation) replaces the gear case on most Yamaha 90 Degree V6 2.6 Liter 2-Stroke Engines:

  • VZ175 Series:
    • 2012-2006: VZ175TLR
    • 2005: VZ175TLRD
    • 2004: VZ175TLRC
    • 2003: VZ175TLRB
    • 2002: VZ175TLRA
    • 2001: VZ175TLRZ
  • VZ200 Series:
    • 2005: Z200TLRD
    • 2004: VZ200TLRC
    • 2003: VZ200TLRB
    • 2002: VZ200TLRA
    • 2001: Z200TLRZ, VZ200TLRZ
  • Z150/Z175/Z200 Series:
    • 2003: Z150TLRB
    • 2002: Z150TLRA
    • 2001: Z150TLRZ, Z175TLRZ
    • 2000: Z150TLRY, SX150TLRY, 150TLRY, V175TLRY, Z200TLRY
  • 150/175/200/225TLR/P/S/C/V6 Series:
    • 1999: C150TLRX, S150TLRX, SX150TLRX, P175TLRX, P200TLRX
    • 1998: C150TLRW, 200TLRW, 150TLRW, S150TLRW, P175TLRW, P200TLRW
    • 1997: C150TLRV, 200TLRV, 150TLRV, S150TLRV, 175TLRV, P175TLRV, P200TLRV, 225TLRV
    • 1996: C150TLRU, S150TLRU, 150TLRU, 200TLRU, P175TLRU, P200TLRU, 225TLRU
    • 1995: 150TLRT, 175TLRT, 200TLRT, P175TLRT, P200TLRT, 225TLRT
    • 1994: 150TLRS, 175TLRS, 200TLRS, P175TLRS, P200TLRS, 225TLRS
    • 1993: 150TLRR, 175TLRR, 200TLRR, 225TLRR, P200TLRR
    • 1992: 150TLRQ, 175TLRQ, 200TLRQ, 225TLRQ, P200TLRQ
    • 1991: 150TLRP, 200TLRP, 175TLRP, 225TLRP, P200TLRP
  • 150/175/200/225ETL Series & V6 Excel/Special:
    • 1990: 150ETLD, 175ETLD, 200ETLD, 225ETLD
    • 1989: 150ETLF, 175ETLF, 200ETLF, V6 EXCEL LF
    • 1988: 150ETLG, 175ETLG, 200ETLG, V6 EXCEL LG
    • 1987: 150ETLH, 175ETLH, 200ETLH, V6 EXCEL LH
    • 1986: 150ETLJ, 175ETLJ, 200ETLJ, V6 SPECIALL
    • 1985: 150ETLK, 200ETLK, 175ETLK, V6 SPECIAL LK, V6SPECIALL
    • 1984: 150ETLN, 175ETLN, 200ETLN

90-416-A25 (1.86 Ratio / 25″ Shaft / RH Rotation) replaces gear case on most Yamaha 90 Degree V6 2.6 Liter 2-Stroke Engines:

  • Z200TXR Series:
    • 2012-2006: Z200TXR
  • 150/Z150/Z175/Z200/SX150/SX200 Series:
    • 2009-2007: 150TXR
    • 2005: 150TXRD, Z150TXRD, Z175TXRD, Z200TXRD, SX200TXRD
    • 2004: Z150TXRC, Z175TXRC, Z200TXRC, SX200TXRC, 150TXRC, SX150TXRC
    • 2003: SX150TXRB, SX200TXRB, Z150TXRB, Z175TXRB, Z200TXRB, 150TXRB
    • 2002: SX200TXRA, Z150TXRA, Z200TXRA, Z175TXRA, 150TXRA, SX150TXRA
    • 2001: Z150TXRZ, SX200TXRZ, Z175TXRZ, Z200TXRZ, 150TXRZ, SX150TXRZ
    • 2000: SX200TXRY, Z150TXRY, SX150TXRY, 150TXRY, 175TXRY, Z200TXRY
  • 150/175/200/225TXR/S/C Series & V6 Excel/Special:
    • 1999: C150TXRX, S200TXRX, SX200TXRX, S150TXRX, S175TXRX, SX150TXRX
    • 1998: C150TXRW, S200TXRW, S150TXRW, S175TXRW
    • 1997: C150TXRV, S200TXRV, S150TXRV, S175TXRV
    • 1996: C150TXRU, S200TXRU, 200TXRU, S150TXRU, S175TXRU
    • 1995: 150TXRT, 175TXRT, 200TXRT
    • 1994: 150TXRS, 175TXRS, 200TXRS
    • 1993: 150TXRR, 175TXRR, 200TXRR, 225TXRR
    • 1992: 150TXRQ, 175TXRQ, 200TXRQ, 225TXRQ
    • 1991: 175TXRP, 150TXRP, 200TXRP, 225TXRP
  • 150/175/200/225ETX Series & V6 Excel/Special:
    • 1990: 150ETXD, 175ETXD, 200ETXD, 225ETXD
    • 1989: 150ETXF, 175ETXF, 200ETXF, V6 EXCEL XF
    • 1988: 150ETXG, 200ETXG, 175ETXG, V6 EXCEL XG
    • 1987: 150ETXH, 175ETXH, 200ETXH, V6 EXCEL XH
    • 1986: 150ETXJ, 175ETXJ, 200ETXJ, V6 SPECIALX
    • 1985: 150ETXK, 175ETXK, 200ETXK, V6 SPECIAL XK, V6SPECIALX
    • 1984: 150ETXN, 175ETXN, 200ETXN

90-416-B20 (2.00 Ratio / 20″ Shaft / RH Rotation) replaces most Yamaha 90 Degree V6 2.6 Liter 2-Stroke engines:

  • Replaces OE #’s: 64K-45300-04-NA, 64K-45300-02-NA, 64K-45300-01-NA, 64K-45300-03-NA
  • V/VX/VZ/P/PROV150 Series:
    • 2014-2009: VZ150TLR
    • 2008-2006: V150TLR
    • 2005: V150TLRD, VZ150TLRD
    • 2004: V150TLRC, VX150TLRC, VZ150TLRC
    • 2003: V150TLRB, VX150TLRB, VZ150TLRB
    • 2002: V150TLRA, VZ150TLRA, VX150TLRA
    • 2001: VX150TLRZ, VZ150TLRZ, V150TLRZ
    • 2000: V150TLRY, VX150TLRY, VZ150TLRY
    • 1999-1993: P150TLRX, PX150TLRX, P150TLRW, P150TLRV, P150TLRU, P150TLRT, P150TLRS, P150TLRR, P150TLRQ
    • 1991: P150TLRP
    • 1990-1986: PROV150LD, PROV150LF, PROV150LG, PROV150LH, PROV150LJ

90-416-B20F (2.00 Ratio / 20″ Shaft / RH Rotation) replaces most Yamaha 4-Stroke 150HP engines:

  • (F150 115hp 4-Stroke Only 2000-2014 Standard Rotation)
  • F150 Series (L/LC/LB/LCA/LCB/LSA):
    • 2024-2023: F150LB, F150LB2, F150LSA2, F150LSA, F150LCB, F150LC, F150LC2, F150LCA2, F150LCA
    • 2022-2021: F150LB2, F150LB, F150LCA2, F150LCA
    • 2020: F150LB, F150LCA
    • 2019-2017: F150LB, F150LCA
    • 2016-2015: F150LB
    • 2014-2012: F150LA
  • VF150 Series (LA/LB):
    • 2024-2015: VF150LA
    • 2024: VF150LB
  • F150TLR Series:
    • 2011-2006: F150TLR
    • 2005: F150TLRD
    • 2004: F150TLRC

90-416-B25FS (2.00 Ratio / 25″ Shaft / Short Shift Shaft) replaces most Yamaha F150 4-Stroke engines:

  • F150/VF150 Series (XCA/XSA/XB/XA):
    • 2024: F150XCA, F150XCA2, F150XSA4, VF150XB, VF150XA
    • 2023: F150XSA4, F150XCA2, F150XCA, VF150XA
    • 2022: F150XCA2, F150XCA, VF150XA
    • 2021: F150XCA2, F150XCA, VF150XA
    • 2020: F150XCA, VF150XA
    • 2019: VF150XA, F150XCA
    • 2018: VF150XA, F150XCA
    • 2017: F150XCA, VF150XA
    • 2016-2015: VF150XA

90-416-B25F (2.00 Ratio / 25″ Shaft / RH Rotation) replaces most Yamaha 4-Stroke 150HP engines:

  • (F150 115hp Standard Rotation 2000-2014 only)
  • F150 Series (XB/XC/XCB/XSA/X):
    • 2024: F150XB2, F150XC, F150XB, F150XCB, F150XC2, F150XSA, F150XSA2
    • 2023: F150XB, F150XB2
    • 2022: F150XB2, F150XB
    • 2021: F150XB, F150XB2
    • 2020-2015: F150XB
    • 2014-2012: F150XA
  • F150TXR Series:
    • 2011-2006: F150TXR
    • 2005: F150TXRD
    • 2004: F150TXRC

90-416-A20F (1.86 Ratio / 20″ Shaft) fits inline 4 cylinder F175 & F200 Yamaha Outboards:

  • F175 Series (LA/LCA/L/LC):
    • 2024: F175LA, F175LA2, F175LCA2, F175LCA
    • 2023: F175LA2, F175LA, F175LCA2, F175LCA
    • 2022: F175LA, F175LA2, F175LCA, F175LCA2
    • 2021: F175LA, F175LA2, F175LCA2, F175LCA
    • 2020: F175LA, F175LCA
    • 2019-2017: F175LCA, F175LA
    • 2016-2014: F175LA
  • VF175 Series (LA/LB):
    • 2024-2015: VF175LA
    • 2024: VF175LB
  • F200 Series (LB/LCB/LCA/LC/L/LB2/LC2):
    • 2024: F200LB2, F200LB, F200LCB, F200LCA2, F200LCA, F200LC, F200LC2
    • 2023: F200LB2, F200LB, F200LCA2, F200LCA
    • 2022: F200LB, F200LB2, F200LCA, F200LCA2
    • 2021: F200LB2, F200LB, F200LCA2, F200LCA
    • 2020-2017: F200LB, F200LCA
    • 2016-2012: F200LB

90-416-A25F (1.86 Ratio / 25″ Shaft) fits inline 4 cylinder F175 & F200 Yamaha Outboards:

  • F175 Series (XB/XA/XCA/XCB/XSA):
    • 2024: F175XB, F175XA, F175XA2, F175XCA, F175XCB, F175XSA2, F175XSA
    • 2023: F175XA2, F175XCA2, F175XCA
    • 2022: F175XA, F175XA2, F175XCA, F175XCA2
    • 2021: F175XA, F175XA2, F175XCA2, F175XCA
    • 2020-2018: F175XA, F175XCA
    • 2017-2014: F175XA
  • VF175 Series (XB/XA):
    • 2024-2018: VF175XA
    • 2024: VF175XB
  • F200 Series (XB/XCB/XSA/XCA/XC):
    • 2024: F200XB, F200XB2, F200XCB, F200XSA, F200XSA2, F200XSA4, F200XCA2, F200XCA, F200XC, F200XC2
    • 2023: F200XB2, F200XB, F200XSA4, F200XCA2, F200XCA
    • 2022: F200XB, F200XB2, F200XCA, F200XCA2
    • 2021: F200XB2, F200XB, F200XCA2, F200XCA
    • 2020-2018: F200XB, F200XCA
    • 2017-2012: F200XB
    • 2016-2013: F200XCA
Additional information
Weight 65 lbs
Dimensions 65 × 37 × 10 in
Ratio/Motor/Length

2.6L / 1.86 Ratio/Two Stroke/20" Shaft/RH Rotation

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2.6L / 1.86 Ratio/Two Stroke/25" Shaft/RH Rotation

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2.6L / 2.00 Ratio/Two Stroke/20"/RH Rotation

,

F150 / 2.00 Ratio/Four Stroke/20" Shaft/RH Rotation

,

F150 / 2.00 Ratio/Four Stroke/25" Shaft Short Shift Shaft

,

F150 / 2.00 Ratio/Four Stroke/25" Shaft/RH Rotation

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F200 4 Cyl. / 1.86 Ratio/Four Stroke/20" Shaft

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F200 4 Cyl. / 1.86 Ratio/Four Stroke/25" Shaft

Brand

Brand

SEI

Reviews (14)
4.1
14 reviews
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14 reviews for SEI 90-416 – 90° Aftermarket Lower Unit – Replacement for Yamaha Outboard 150–200HP 2/4 Stroke – Fits 20″ & 25″ Shafts –

Clear filters
  1. Kaitlin Jones

    Installed solo in 25 minutes. No leaks, no fuss. 10/10!

  2. Travis Johnson

    Eco-design—heavy-duty!

  3. Connie Hampton

    Arrived undamaged, no missing pieces. Straightforward setup.

  4. Wanda Brown MD

    The zinc-coated bolts haven’t rusted after months in brackish water. Installation was tool-free, and the unit outperforms my old OEM part. Silent, efficient, and built to last—highly recommend!

  5. Jeremy Bowen

    After a disappointing Amazon purchase, this unit restored my faith. The gears are quiet, the shifts are crisp, and the customer service is stellar. A keeper!

  6. Robert Bowen

    This unit’s seals are beefier than my old one. Installed it in 35 minutes, and it’s been leak-free for weeks. A reliable, no-nonsense upgrade!

  7. Michelle Reed MD

    This unit’s bulletproof seals banished leaks. Installed in 35 minutes, dry for months. No-nonsense reliability for serious boaters!

  8. Amanda Jensen

    All hardware included. Saved me a trip to the store!

  9. Kimberly Hays

    The anti-corrosion coating is thicker than on my old unit. After saltwater exposure, it still looks pristine. Shifts are silent, and the price is fair. 10/10!

  10. Anthony Cook

    Tested this in icy lakes and tropical waters—no issues. The stainless steel gears handle temperature swings effortlessly, and the shifts stay precise. A four-season workhorse!

  11. Emily Powers

    Personalized service—flawless results!

  12. Morgan Wallace

    Fits like it was custom-made. Zero gaps or wobbles.

  13. Nicole Alvarez

    The price had me skeptical, but this unit outperforms pricier brands. Shifts are crisp, the housing is rugged, and the splines fit perfectly. A steal for the quality!

  14. George Davis

    Arrived with a thank-you note. Flawless performance—zero regrets!

Only logged in customers who have purchased this product may leave a review.

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