This part is a Cylinder Head. 
There is typical wear to the part as shown in the pictures. 
The item came off of a 1984 Yamaha Tri-Moto 225. 
Item Manufacturer Part Number for the Head is 15A-11110-04-00. 
Item Manufacturer Part Number for the Camshaft is 5N0-12171-10-00.
If you have any questions, please feel free to contact us. 
If our price is not competitive, please contact us, or make an offer! 
-Blue Collar Sales and Service

This part fits the bikes listed below:

YAMAHA

2023

TW200

2022

TW200

2021

TW200

2020

TW200

2019

TW200

2018

TW200

2017

TW200

2016

TW200

2015

TW200

2014

TW200

2013

TW200

2012

TW200

2011

TW200

2010

TW200

2009

TW200

2008

TW200

2007

TW200

2006

TW200

2005

TW200

2004

TW200

2003

TW200

2002

TW200

2001

TW200

2000

TW200

1999

TW200

1998

TW200

1997

TW200

1996

TW200

1995

TW200

1993

TW200

1992

TW200

1991

TW200
YFM250 Moto-4

1990

TW200
YFM250 Moto-4

1989

TW200
YFM200 Moto-4
YFM250 Moto-4
YFU1TW Pro Hauler Turf
YFU1W Pro Hauler

1988

BW200
TW200
YFM200 Moto-4
YFM225 Moto-4

1987

BW200
TT225
TW200
YFM200 Moto-4
YFM225 Moto-4

1986

BW200
TT225
YFM200 Moto-4
YFM225 Moto-4
YTM225 Tri-Moto

1985

BW200
YFM200 Moto-4
YTM200 Tri-Moto
YTM225 Tri-Moto

1984

YTM200 Tri-Moto
YTM200E Yamahauler
YTM225 Tri-Moto

1983

XT200
YTM200 Tri-Moto
YTM200E Yamahauler
YTM225 Tri-Moto

1982

XT200