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Accelerator pump rebuild kit for many of the late 70's and early 80's Honda's. This kit comes with the diaphragm with a 89mm long rod attached, spring, o-ring and a rubber boot for the rod. Get that CB pulling like it should with a fresh accelerator pump! If you're planning to rebuild the carbs and replace all the gaskets, it's a good idea to replace the accelerator pump as well. Check to see if there are any cracks or holes in the diaphragm, if there are, it needs to be replaced.
Replaces Honda part numbers: 16021-MC9-771, 16021-393-004, 16201-393-014, 16021-KB7-671, 16021-426-003, 16021-460-771
Replaces K&L Part Number: 18-2807
Note: Could be used on the CMX250C Rebel from 1985-1987 but the rod needs to be cut.
Fits Honda:XL250R - 1982-1983
CB450SC Nighthawk - 1983
CB450SC Nighthawk - 1985-1986 - Check rod length before ordering
CM450E - 1983
XL500R - 1982
CB650 - 1979-1982
CB650C - 1980-1981 - Check rod length before ordering
CB650SC Nighthawk - 1982
CB750A Hondamatic - 1976-1978
CB750F Super Sport - 1977-1978
CB750K - 1977-1978
Country guy
2025-09-03 10:17:47
Hard to find lots of stuff for classic cars and bikes. My mechanic shortened the rod on the pump piece and it works great. The folks at Honda Rebel Forum sent me your way.Time to zoom :-)
JS
2025-07-29 16:15:23
Worked great in my 1983 Honda XL250R
Chris.
2025-07-12 12:05:12
Had to cut the stem down but works great! I'd buy agian.
J
2025-06-06 09:54:04
Great replacementment. Already has the ear holes enlarged. Exact fit for 78 cb750A
Chris Kidd
2025-03-11 19:44:36
My old bike runs better than it ever has
John S
2025-02-27 13:17:02
Yep. In case you were wondering
Customer
2025-02-25 18:15:13
Worked perfect on my 1993 XR250 L.
Rphill
2025-02-05 11:11:45
This said it would fit my 82 cb650sc. It did NOT say to check the length as some other models did. Well.... It was way too long. Not a huge deal, but not as advertised.
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