JBM Industries replacement Keihin Carburetor Diaphragms for Kawasaki KZ250 and
KZ440 twins with key groove and 71 mm. ( Keihin CV-32 )  JBM also has 67 mm square
groove for Kawasaki Vulcan 88 1500 Keihin CVK36 carburetors. Easy replacement
carburetor diaphragm for your vintage motorcycle. Shown here ia a Keihin with 71 mm
"keyed" groove diaphragm for Kawasaki KZ440 LTD. 78 mm diaphragms fit Vintage
Honda 360, & 73mm fit CB or CL 350....  67mm fit Kawasaki Vulcan CVK36 carburetors.
Updated 02/05/12
Click here to go
to MIKUNI
diaphragm
page.
Click here to go to
JBM home page.
Only $19.50 each
JBM only charges $3 to ship a pair of
these diaphragms WORLDWIDE.
They are very light.
To order: Go to the "How to Order" page
E-mail jbmindustries@att.net
Click here to go to
Pay Pal
Note:
All JBM diaphragms are made from
our special TSR compound for the
longest lasting parts available.
  • Saved me a lot of money, will deal with again Buyer: Member id dahomhi91 ( Feedback Score Of 24)  May-10-11 13:37
Diaphragm Honda 360 Keihin Carburetor 78 mm dia. PAIR (#230601014788)
  • Brilliant product, Unbelievably fast shipping Buyer: Member id ricepaddyco ( Feedback Score Of 38697)  Apr-27-11 08:06
Diaphragm Honda 360 Keihin Carburetor 78 mm dia. PAIR (#230601014788)
  • Fast shipping. Great price. Saved me about $100+ Thanks! Buyer: Member id familycamp ( Feedback Score Of 3 )  Apr-11-11 08:57
KAWASAKI KZ440-400 Keihin CV carburetor diaphragm 71 mm (#330543642302)
  • As advertised, easy install fast shipping, very satisfied customer Buyer: Member id sunshine3angels ( Feedback Score Of 32)  May-07-11 19:46
KAWASAKI KZ440, KZ250 Keihin carburetor diaphragm 71mm (#230612921175)
  • Super seller, instant shipping excellent parts, awsome followup. thanks Buyer: Member id kyther ( Feedback Score Of 192)  Mar-31-11 01:33
Diaphragm Honda 360 Keihin Carburetor 78 mm dia. PAIR (#230601014788)
  • Item was as described, well packed and arrived in good time. Very pleased. Buyer: Member id xbluz ( Feedback Score Of 42)  Feb-03-11 06:26
KAWASAKI KZ440-400 Keihin CV carburetor diaphragm NEW (#230571313682)    KAWASAKI KZ440-400 Keihin CV carburetor diaphragm NEW
  • Would buy from this seller again Buyer: Member id d0nthomas ( Feedback Score Of 70)  Jan-26-11 18:08
  • KAWASAKI KZ440-400 Keihin CV carburetor diaphragm NEW (#230571313682)    KAWASAKI KZ440-400 Keihin CV carburetor diaphragm NEW
Excellent product worked great! Buyer: Member id hdsadey ( Feedback Score Of 62)  Feb-07-11 08:10
  • Fast shipping Good quality Buyer: Member id rttowne ( Feedback Score Of 26)  Feb-22-11 17:54
KAWASAKI KZ440-400 Keihin CV carburetor diaphragm 71 mm (#330530551811
  • Work really well, cheers Buyer: Member id motogriper ( Feedback Score Of 334)  Mar-14-11 11:36
KAWASAKI KZ440-400 Keihin CV carburetor diaphragm 71 mm (#330530551811)
  • Thanks, diaphragms installed easy price was right and shipping prompt Buyer: Member id e*skys* ( Feedback Score Of 112)  Mar-14-11 14:15
KAWASAKI KZ440-400 Keihin CV carburetor diaphragm 71 mm (#330530551811)
  • KAWASAKI VULCAN 88 1500cc
  • Thank you for the parts, they fit perfectly.I will recommend  your name to my MC friends. Again, thank you for the great job,   Larry
  • Received the diaphragms today they fit great per the directions on your website My girlfriends kz400 runs perfectly again thank you so much. Will recomend
    your products to everyone i know needing rubber parts for their vintage bikes.  Ed Wrangler
  • Item as advertised. Quick shipping. Installed easily.+++++++++++++++++++++++++++ Buyer: Member id wolverinetal ( Feedback Score Of 319)  May-18-11  
 KAWASAKI KZ440, KZ250 Keihin carburetor diaphragm 71mm (#230612921175)
  • Just wanted to thank you for the diaphrams I ordered on Friday (June 24th). I got them in today, put them on the Kawasaki KZ750, and cleaned the carbs--
    that did the trick-- it runs like a beast!! A few years ago we were having issues with the diaphrams, but couldn't find anyone who made them, so I'm glad you
    are making them now! Thanks again :)        Rebekah Bartlett
  • they fit great thanks david  Buyer: Member id 123.davidk ( Feedback Score Of 44) Nov-10-11 17:51
KAWASAKI KZ440, KZ400, KZ250. KZ750/4 Keihin CV32 Carburetor Diaphragm 71mm (#330632404350)
  • excellent : rapide et conforme a la descriptiion. je recommande , godd job !!!!!Buyer:Member id eps714 ( Feedback Score Of 500) Nov-08-11 02:43
YAMAHA XS & TX 650, 750, KAWASAKI KZ750 twin, Mikuni BS38 Carburetor Diaphragm (#230692796079)
  • made my 30 year ols carbs like new Buyer: Member id profloor181 ( Feedback Score Of 37) Nov-06-11 12:21 KAWASAKI KZ440, KZ400, KZ250. KZ750/4
    Keihin CV32 Carburetor Diaphragm 71mm (#330632404350)
  • Very fast shipping, parts as described. Highly recommended! Buyer:Member id rickgray1 ( Feedback Score Of 1028) Nov-04-11 17:29
YAMAHA XS & TX 650, 750, KAWASAKI KZ750 twin, Mikuni BS38 Carburetor Diaphragm (#230692796079)
  • item is as described, good packing & fast shipping Buyer: Member id cycletron2000 ( Feedback Score Of 346) Nov-04-11 10:56
Honda 350 Keihin Carburetor diaphragm 73mm diameter set (#330632404357)
Only $19.50 each
Need more info? Click here.
Please state groove diameter
See HOW TO MEASURE
and sizes page
Please state carburetor make & groove diameter
  • JBM replacement carburetor diaphragms for your vintage motorcycle are made from special TSR compound that resists heat and fuels with ethanol.
  • Diaphragms have a smooth "rolling" action and eliminate the possibility of leakage at the plastic rings.
  • JBM carb diaphragms are easy to install, and inexpensive, giving added life to old bikes.
  • Restores smooth operation and original fuel economy.
  • Very cheap to ship.
Testimonials from a few that tried them:
Click here to
go to Hitachi
diaphragm
page.
Honda 360 & 350: Air holes in the
slide go on the intake side!
NOTE:
If ordering the 68mm round groove diaphragm used
on Hitachi Carburetors for use in a Keihin as shown
here in these photos, be SURE that the small hole in
the locating tab is not drilled to any other passages.
Some of these Keihins have a brass tube though this
hole, and others, such as the one shown here are
blank and do nothing. ( see second photo )
So far, all JBM supplies for these 68 mm round
groove carbs is Hitachi 68 mm with no locating tab.
Diaphragms shown here fit the Keihin CVK 36 used on the Kawasaki Vulcan 1500cc
Click here to go to Keihin
"VG" series diaphragm page
Click here to go to Keihin
"VG" series diaphragm page
Click here to go to Keihin "VG" series diaphragm page
Honda Hurricane  CBR
To prevent rotation or removal:
Some folks want to use Super Glue adhesive on the slide,
and this will not harm anything, but be sure not to get
adhesive on the sides of the slide. Use sparingly, as solvents
are not good for the rubber.
Order 78mm Keihin
Diaphragm for Honda 360
Order 73mm Keihin for
Honda CB or CL 350
NOTE: When using side cutters to cut metal
retaining rings, "Rock" the cutter back and forth
to split ring.
Click here to see 'How to remove and
repair a damaged Honda CB or CL350
carburetor slide.