- Monday 8:00AM - 6:00PM
- Tuesday 8:00AM - 6:00PM
- Wednesday 8:00AM - 6:00PM
- Thursday 8:00AM - 6:00PM
- Friday 8:00AM - 6:00PM
- Saturday Closed
- Sunday Closed
Opening Hours
|
||||||||||||
 | Hovering will show thumbnail Pop-Up Clicking will show section. |
| Hovering will show thumbnail Pop-Up Clicking will show section. |
|
Place items in Parts List to send to Irwin Supply for pricing and availability. Numbers shown are quanties used per assembly. Enter the quanties needed for repair. |
| ORDER QTY |
REF. NO. |
PART NO. / DESCRIPTION | 450 SX ATV |
| 1 | 83531001000 CARBURETOR FCR-MX 4125L,TPS |
1 | |
| 5 | 57331027044 CARBURETOR COVER WITH GASKET |
1 | |
| 12 | 57331046100 THROTTLE SHAFT CPL. |
1 | |
| 14 | 83031046050 COIL SPRING THROTTLE SHAFT ATV |
1 | |
| 16 | 76231035051 LINK ARM THROTTLE VALVE CPL.07 |
1 | |
| 19 | 57331035100 THROTTLE VALVE CPL. FCRMX |
1 | |
| 20 | 59031035050 BUSHING THROTTLE VALVE |
1 | |
| 21 | 57331035153 GASKET PLATE THROTTLE VALVE |
1 | |
| 22 | 59031035052 GASKET WASHER THROTTLE VALVE |
1 | |
| 23 | 57331034100 JET NEEDLE KEIHIN OBEKP |
X | |
| 23 | 57331034200 JET NEEDLE KEIHIN OBEKQ |
X | |
| 23 | 57331034300 JET NEEDLE KEIHIN OBEKR |
X | |
| 23 | 57331034400 JET NEEDLE KEIHIN OBEKS |
X | |
| 23 | 57331034500 JET NEEDLE KEIHIN OBEKT |
X | |
| 24 | 59031029000 BAR CLIP |
1 | |
| 25 | 57331032000 NEEDLE SET SCREW CPL. |
1 | |
| 26 | 59031121000 NEEDLE JET FCR-MX |
1 | |
| 27 | 54531623165 MAIN JET 165 KEIHIN |
X | |
| 27 | 54531623168 MAIN JET 168 KEIHIN |
X | |
| 27 | 54531623170 MAIN JET 170 KEIHIN |
X | |
| 27 | 54531623172 MAIN JET 172 KEIHIN |
X | |
| 27 | 54531623175 MAIN JET 175 KEIHIN |
X | |
| 27 | 54531623178 MAIN JET 178 KEIHIN |
X | |
| 27 | 54531623180 MAIN JET 180 KEIHIN |
X | |
| 28 | 54531607038 IDLE JET 38 KEIHIN |
X | |
| 28 | 54531607040 IDLE JET 40 KEIHIN |
X | |
| 28 | 54531607042 IDLE JET 42 KEIHIN |
X | |
| 28 | 54531607045 IDLE JET 45 KEIHIN |
X | |
| 29 | 59031051085 STARTER JET 85 |
X | |
| 30 | 57331107100 IDLE AIR JET 100 KEIHIN |
1 | |
| 32 | 59031017100 ADJUST SCREW CPL. FCR-MX |
1 | |
| 35 | 57331085000 BUFFER PLATE |
1 | |
| 39 | 57331009000 FLOAT CPL. |
1 | |
| 40 | 57331008000 ARM PIN FLOAT |
1 | |
| 41 | 77031075000 HOT-STARTER VALVE |
1 | |
| 42 | 54631220000 FLOAT NEEDLE |
1 | |
| 43 | 54531621000 CLAMP |
1 | |
| 46 | 76231155000 DRAIN SCREW + O-RING |
1 | |
| 47 | 57331060000 COVER ACCELERATOR PUMP |
1 | |
| 48 | 57331057100 DIAPHRAGM ACCELERATOR PUMP |
1 | |
| 49 | 78031011000 FLOAT CHAMBER CPL. |
1 | |
| 50 | 54631085000 JET POWER JET CLOSED KEIHIN |
X | |
| 53 | 59031059000 COIL SPRING |
1 | |
| 55 | 77031048000 STARTER VALVE SHORT CPL. |
1 | |
| 56 | 57331098000 BREATH.HOSE FCR-MX KEIHIN CPL. |
1 | |
| 60 | 83031094000 SCREW FOR COVER |
2 | |
| 61 | 54531699000 PLUG M 18X1 |
1 | |
| 64 | 57331062000 INTERMEDIATE LEVER CPL. |
1 | |
| 65 | 57331056000 LINK LEVER |
1 | |
| 66 | 57331059000 SPRING LINK LEVER |
1 | |
| 67 | 57331159000 SPRING INTERMEDIATE LEVER |
1 | |
| 68 | 83031038000 COVER, GASKET, HOSE |
1 | |
| 69 | 57331087000 WASHER LINK LEVER |
1 | |
| 70 | 57331084000 E-CLIP |
1 | |
| 71 | 83031038001 GASKET FOR CARBURETOR COVER |
1 | |
| 72 | 57331061000 ROD ACCELERATOR PUMP |
1 | |
| 79 | 58431082100 YDNAC-CLAMP 10173 (16MM) |
1 | |
| 83 | 59031013044 HOSE CONNECTOR CPL. |
1 | |
| 85 | 0910100003 PLUG DIN0910-M 10X1 |
1 | |
| 86 | 0603100141 COPPER GASKET DIN7603-10X14X1 |
1 | |
| 87 | 59031040300 HOSE CONNECTOR KEIHIN |
1 | |
| 88 | 83031050000 ENGINE BREATHER TUBE |
1 | |
| 90 | 57331025000 STOP SCREW CPL. FCR-MX |
1 | |
| 96 | 59031077200 TPS-SENSOR FCRMX 190MM |
1 | |
| 99 | 57331099000 GASKET SET FCR-MX KEIHIN |
1 |
| Powered by HLSM |
| Copyright © 2026 HLSM, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed. For further information, contact HLSM, Inc. Version: 02/10/2026 |
