Mikuni HSR smoothbore carbs and kits for Harley-Davidson

42mm Carb only, standard finish TM42-6 001-549 (use stock choke cable from H-D CVK type carb.)
42mm Carb only, polished finish TM42-6PK 001-551
45mm Carb only, standard finish TM45-2K 001-554
45mm Carb only, polished finish TM45-2PK 001-555
48mm Carb only, standard finish TM48-1 001-558
48mm Carb only, polished finish TM48-1PK 001-559
 
Carburetor Kit HSR 42-7 (001-602)
Carburetor Kit HSR 42-8 (001-603)
Carburetor Kit HSR 42-10 (001-605)
Carburetor Kit HSR 42-19 (001-622)
 
Pilot jet VM28/486
Main jet N100.604
 

EXPLODED VIEW PARTS

For exploded view carb parts
HSR42-45-48 new style parts exploded view
HSR42-45-48 old style parts exploded view

HSR MIKUNI MILEAGE KIT

Contains 17.5 pilot jet, 98 needle and 50 accel pump nozzle (not suggested for use with big cams or straight pipes)

HSR42 kit order VM28/486 17.5, needle J8-8DDY01-98, accel pump noz 007-485
HSR45 kit order VM28/486 17.5, needle J8-8CFY02-98, accel pump noz 007-485
HSR48 kit order VM28/486 17.5, needle J8-8CFY15-98, accel pump noz 007-485

HSR42/45/48 Carburetor Rebuild Kits
HSR42/45 Carburetor Rebuild Kits KHS-016 with 4.2 Needle Vlv. Assy 002-989
HSR48 Carburetor Rebuild Kits KHS-031 with 4.5 Needle Vlv Assy 002-982
(2.3) Fuel Pump 786-27001 007-478
(3.5) Offroad 786-27001 007-477
(4.2) Std on HSR42/45 786-27001 007-476
(4.5) Std on HSR48 786-27002-1A-4.5 007-708
O-ring for Needle Valve Seat 616-33003 007-470
Standard TM42/11-70 007-487
Leaner TM42/11-60 007-486
Leanest TM42/11-50 007-485
Main Jet Extender Kit KHS-034 002-978
Intake manifold for HSR42/45 Evo style without hole HS42/061-45 007-459
Intake manifold for HSR42/45 Twin Cam with MAPS hole HS42/061-45TC 007-457
Click here for mounting flanges

HSR 42 needles

#8DDY01-98 2.98 007-083
#8DDY01-97 2.97 007-082
#8DDY01-96 2.96 007-081
#8DDY01-95 2.95 007-080

HSR 45 needles

#8CFY02-98 2.98 007-103
#8CFY02-97 2.97 007-102
#8CFY02-96 2.96 007-101
#8CFY02-95 2.95 007-100

HSR 48 needles

#8CFY15-98 2.98 007-098
#8CFY15-97 2.97 007-097
#8CFY15-96 2.96 007-096
#8CFY15-95 2.95 007-095
Kit includes air box adapter, qt 3 screws and o-ring Mikuni part HS42-001K 007-455
Air Box Adapter HS42/001 007-450
Adapter Screw HS42/002 007-453
O-Ring Seal for Air Box Adapter HS42/003 007-454

HS42/067 Air Filter Bracket 007-764

HS42/019 Air Filter Bracket 007-465

HSR Short Idle Screw (Optional)


No.55A in old style HSR and No. 59A in New Style HSR. Optional shorter length for all HSR42/45/48.
Sold each. Mikuni No. Order No. 990-605-065 007-484
Note: Do not modify the idle screw or any of its component pieces. If the screw is removed, be sure to
re-install with the components in place as shown in the exploded view links above.

HSR short idle screw 990-605-065 007-484
HSR chrome carb top KHS-029 002-991
Mikuni HSR HSR42/45/48 choke cable assembly 990-662-002 007-208
Mikuni HSR HS40 choke cable assembly 990-662-001 007-209
Choke Pull Assembly TM29/31 007-761
HSR Crankcase Head-Breather KitMikuni No. KHS20 002-984
HSR Crankcase Head-Breather KitMikuni No. KHS30 002-981

Fitment: 1970 to 1995 Screw in Type for Early HSR42/45

Open (Pull) Cable Standard (38”) HS42/028A 007-451
Close (Push) Cable Standard (38”) HS42/029A 007-452
Open (Pull) Cable Dresser (47”) KHS/039 007-550
Close (Push) Cable Dresser (47”) KHS/040 007-551

Fitment: 1996 to Present Push in Type

Open (Pull) Cable Standard (38”) KHS/043 007-554
Close (Push) Cable Standard (38”) KHS/044 007-555
Open (Pull) Cable Dresser (47”) KHS/041 007-552
Close (Push) Cable Dresser (47”) KHS/042 007-553