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Common Parts
Western Snowplow Unimount MVP Hydraulic Parts

Replacement Parts for Western Snowplow Unimount MVP Plow Hydraulics are listed below. The diagram below shows the entire plow assembly broken up into smaller parts. Each replacement part avaliable is labeled with a number and below each drawing you can view the description of the part and order it as well.

Show Me: Motor Service Parts | Hydraulics Service Parts Diagram 1
Hydraulics Service Parts Diagram 2 | Hydraulics Service Parts Diagram 3
Hydraulics Service Parts Diagram 4


Motor Manufacturer Identification and Service Parts
Item Part # Description
Prestolite 2 Terminal
* 56638 END CAP W/ O-RING - PRESTOLITE 2 TERMINAL More Info
* 56622 BRUSH KIT - PRESTOLITE 2 TERMINAL More Info
61 56621 THRU-BOLT KIT - PRESTOLITE 2 TERMINAL (Includes cap screws and special washers) More Info
65 56641 THRUST WASHER KIT - PRESTOLITE 2 TERMINAL (Includes retaining ring for early production) More Info
Bosch 2 Terminal
* 56620 BRUSH KIT - BOSCH 2 TERMINAL **OBSOLETE** More Info
61 21508 CS HX 1/4-20 X 6-1/4 G5 ZYC More Info
58 91201 WASHER SP LK 1/4 More Info
65 21535 WASHER, FIBER THRUST 5/8 (drive end) More Info

* Not Shown.

Parts furnished in the hydraulics box and installed on the vehicle are shown in the mount box instructions.

Indented parts are included in the assembly under which they are listed. Quantities shown are included with the assembly.


MVP SNOWPLOW ASSEMBLY PARTS LIST HYDRAULICS BOX NO. 66587
Item Part # Description
1 66780 HYDRAULIC UNIT More Info
2 . 66774 PRIMARY VALVE MANIFOLD ASSY W/ CARTRIDGES, COILS, COVERS More Info
3 . . 66776 PRIMARY MANIFOLD ASSY W/O CARTRIDGES, COILS, COVERS More Info
(Both Primary Manifold Assemblies include item 47 (4), 49 (1), 50)
5 . . . 49138K RELIEF VALVE KIT - 2 SETS More Info
10A . . . 66509 QUILL ASSY More Info
10B . . . 56662 QUILL ASSY More Info
11 . . . 66785 PILOT - CHECK VALVE KIT More Info
13 . . . 66515 PUMP SHAFT SEAL More Info
14 . . . 66607 #10-24X5/16 MACHINE SCREW More Info
20 . . 49227K CARTRIDGE 20 W/JAM NUT More Info
* . . . 49258 SEAL KIT - CARTRIDGE 20 More Info
22 . . 49229K CARTRIDGE 40 W/JAM NUT More Info
23 . . 66783w CARTRIDGE 43 W/JAM NUT More Info
* . . . 49259 SEAL KIT - CARTRIDGE 30, 31, 33, 40, 43 More Info
25 . . 49230K COIL W/SPADE TERMINALS More Info
30 . . 66396 COVER ASSY V-PLOW 4-4-2 More Info
31 . . 90650 #8-32X1/2 TORX HXW TCTS TY D ZP More Info
32 . 66786 SECONDARY VALVE MANIFOLD ASSY W/ CARTRIDGES, COILS, COVERS More Info
33 . . 66772 SECONDARY MANIFOLD ASSY W/O CARTRIDGES, COILS, COVERS More Info
(Both Secondary Manifold Assemblies include item 47 (4))
5 . . . 49138K RELIEF VALVE KIT - 2 SETS More Info
11 . . . 66785 PILOT - CHECK VALVE KIT More Info
36 . . 49228K CARTRIDGE 30 W/JAM NUT More Info
22 . . 49229K CARTRIDGE 40 W/JAM NUT More Info
* . . . 49259 SEAL KIT - CARTRIDGE 30, 31, 33, 40, 43 More Info
25 . . 49230K COIL W/SPADE TERMINALS More Info
38 . . 66397 COVER ASSY V-PLOW 3-3 More Info
39 . . 66398 COVER ASSY V-PLOW 4 WAY More Info
31 . . 90650 #8-32X1/2 TORX HXW TCTS TY D ZP More Info
* . 56657 O-RING AND BACK-UP RING KIT - SOL More Info
(For Primary and Secondary Manifold Relief Valves, Check Valves and Quill Assembly. Above listed Kits include back-up and o-rings.)
45 . . 25622 O-RING -006 More Info
46 . . 55371 O-RING -008, 90 DUROMETER (black) More Info
47 . . 25731 O-RING -010 More Info
48 . . 66627 O-RING -011 More Info
49 . . 56274 O-RING -013 More Info
50 . . 66519 O-RING 2-250 More Info
51 . . 56569 O-RING -906 More Info
52 . . 56776 O-RING -008, RED, 70 DUROMETER More Info
53 . . 56416 O-RING -014 More Info
55 . . 56315 BACK-UP RING -006 More Info
56 . . 66628 BACK-UP RING -008 More Info
57 . 66405 RETURN SCREEN ASSY More Info
58 . 91201 1/4" SP LK WASHER ZP More Info
59 . 66597 1/4-20X2-1/2 HX CS G5 ZP/ZYC More Info
60 . 21500 MOTOR ASSY 4-1/2" More Info
67 . 66631 RESERVOIR KIT MVP (Kit includes Items 14 (4), 50) More Info
68 . . 92095 PLUG 1/4 NPTF HX SO THREAD SEAL More Info
69 . 73897 MAGNET More Info
70 . 21501 HYD PUMP KIT (FloStat) More Info
74 . . 66763 INLET FITTING / FILTER KIT (Includes 49, 50, 53) More Info
80 . . . 66763 INLET FITTING KIT More Info
71 RETAINER CLIP
75 . 66599 PICK-UP TUBE ASSY (Early pumps with hose clampsincludes Item 76) More Info
76 . 56789 SUCTION FILTER KIT More Info
77 . 90073 5/16-18X2-1/4 HEX CAP SCREW G5 More Info
79 . 66525 RESERVOIR FILLER BREATHER PLUG More Info

* Not Shown.

Parts furnished in the hydraulics box and installed on the vehicle are shown in the mount box instructions.

Indented parts are included in the assembly under which they are listed. Quantities shown are included with the assembly.


MVP SNOWPLOW ASSEMBLY PARTS LIST HYDRAULICS BOX NO. 66587
Item Part # Description
1 66722 RAM ASSY 1-1/2" X 8" More Info
2 . 25944K PACKING NUT 1-1/2" More Info
5 . 25205K PACKING SET W/WIPER 1-1/2" More Info
6 . . 55137 WIPER RING 1-1/2" More Info
7 . . 55136 PACKING SET 1-1/2" More Info
10 . 91167 WASHER - SPECIAL More Info
11 . 56534 PLUNGER 1-1/2" X 8" RAM More Info
12 . 62290 SPLIT BEARING 1-1/2" More Info
13 . 66721 CYLINDER 1-1/2" X 8" More Info
16 66778 MOUNTING BRACKET KIT (WP) More Info
17 . 67386 CYLINDER MOUNT BRACKET More Info
18 . 67387 CYLINDER MOUNT BRACKET More Info
19 . 90461 1/4-20X3/4 HX CS G5 ZP More Info
20 . 91331 1/4-20 PT HX LK NUT NYIS ZP More Info
21 . 90010 1/4-20X2-3/4 HX CS G5 ZP More Info

Parts furnished in the hydraulics box and installed on the vehicle are shown in the mount box instructions.

Indented parts are included in the assembly under which they are listed. Quantities shown are included with the assembly.


MVP SNOWPLOW ASSEMBLY PARTS LIST HYDRAULICS BOX NO. 66587
Item Part # Description
1 92190K 45F AD UNION (MALE) 1/4 NPTF/NPSM More Info
2 66562K STRAIGHT ADAPTER UNION (MALE) More Info
3 92210K 1/4 NPTF X 90 STREET ELL HYD More Info
4 56539K ELBOW, 90F -6 O-RING-1/4 NPTF More Info
5 56224K HIGH PRESSURE HOSE 1/4 X 18 More Info
6 4424K HIGH PRESSURE HOSE 1/4 X 36 More Info
7 55020K HIGH PRESSURE HOSE 1/4 X 38 More Info
8 66624 PLOW CABLE ASSEMBLY More Info
9 56709W KIT, DA RAM, 2X10 (includes 4 of item 4) More Info
10 . 64311 2X10 DA CYL WELDMENT KIT More Info
11 . 56579 GLAND NUT POLYPAC SEAL More Info
12 . 66379 PISTON 2" More Info
13 . 66394 2X10 DA CYLINDER ROD KIT More Info
14 . 66389 SEAL KIT 2" BORE DA CYL More Info

Parts furnished in the hydraulics box and installed on the vehicle are shown in the mount box instructions.

Indented parts are included in the assembly under which they are listed. Quantities shown are included with the assembly.


MVP SNOWPLOW ASSEMBLY PARTS LIST HYDRAULICS BOX NO. 66587
Item Part # Description
1 64294 HAND-HELD CONTROL (MVP) More Info
2 . 49320 CONTROL BODY-RIGHT More Info
3 . 49321 CONTROL BODY-LEFT More Info
4 . 66792 KEYPAD ASSEMBLY (MVP) More Info
5 . 66793 PC BOARD ASSEMBLY (MVP) SERVICE More Info
6 . 66633 HARNESS (MVP) PLOW COIL CORD More Info
7 . 93173 #8-18X3/4 SL HXW TFTS HILO More Info
8 . 93174 #8-18X1-1/4 SL HXW TFTS HILO More Info
* 69190 FUSE KIT (MVP) PLOW PKG OF 5 More Info
9 56436 CONTROL BRACKET More Info
10 80135 #6X1 PH PN TCTS TY F ZP/ZPC More Info
11 91230 #6 SP LK WASHER ZYC/ZP More Info
* 91098 #10 PLAIN WASHER TY A ZP/ZYC More Info
13 91242 #10 SP LK WASHER BZP More Info
14 91402 #10-32 HX NUT ZP More Info
* 90002 1/4-20-X3/4 HX CS G2 ZP More Info
* 91101 1/4 PLAIN WASHER TY A STD ZP More Info
* 91331 1/4-20 PT HX LK NUT NYIS ZP More Info
18 91202 5/16 SP LK WASHER ZP More Info
19 92842 5/16-24 HX JAM NUT ZP More Info
20 59114 SELF STRIP WIRE CONNECTOR More Info
21 66130 RUBBER GROMMET More Info
22 66623 VEHICLE CABLE ASSEMBLY More Info
23 56131K MOTOR RELAY KIT More Info
24 22511 BATTERY CABLE 22" RED More Info
* 20681 BATTERY CABLE 50" More Info
25 56099 DIELECTRIC GREASE TUBE .25 oz. SIZE More Info
25 49326 WESTERN DIELECTRIC GREASE TUBE 2 oz. More Info
* 66760K (MVP) PLOW ADAPTOR CABLE KIT More Info

* Not Shown.

Parts furnished in the hydraulics box and installed on the vehicle are shown in the mount box instructions.

(For straight blade use with MVP vehicle harness.)

Indented parts are included in the assembly under which they are listed. Quantities shown are included with the assembly.

91201 - <span style='color:red;'>No info available for this part.</span> 56621 - <span style='color:red;'>No info available for this part.</span><br><br>21508 - <span style='color:red;'>No info available for this part.</span> 56641 - <span style='color:red;'>No info available for this part.</span><br><br>21535 - <span style='color:red;'>No info available for this part.</span> 66780 - <span style='color:red;'>No info available for this part.</span> 66774 - <span style='color:red;'>No info available for this part.</span> 66776 - <span style='color:red;'>No info available for this part.</span> 49138k_3 - <span style='color:red;'>No info available for this part.</span> 49138k_3 - <span style='color:red;'>No info available for this part.</span> 49138k_3 - <span style='color:red;'>No info available for this part.</span> 49138k_3 - <span style='color:red;'>No info available for this part.</span> 66509 - <span style='color:red;'>No info available for this part.</span> 66509 - <span style='color:red;'>No info available for this part.</span> 66509 - <span style='color:red;'>No info available for this part.</span> 56662 - <span style='color:red;'>No info available for this part.</span> 56662 - <span style='color:red;'>No info available for this part.</span> 56662 - <span style='color:red;'>No info available for this part.</span> 66785 - <span style='color:red;'>No info available for this part.</span> 66785 - <span style='color:red;'>No info available for this part.</span> 66785 - <span style='color:red;'>No info available for this part.</span> 66785 - <span style='color:red;'>No info available for this part.</span> 66785 - <span style='color:red;'>No info available for this part.</span> 66515 - <span style='color:red;'>No info available for this part.</span> 66607 - <span style='color:red;'>No info available for this part.</span> 66607 - <span style='color:red;'>No info available for this part.</span> 66607 - <span style='color:red;'>No info available for this part.</span> 49227k_2 - <span style='color:red;'>No info available for this part.</span> 49229k_1 - <span style='color:red;'>No info available for this part.</span> 49229k_1 - <span style='color:red;'>No info available for this part.</span> 66783w - <span style='color:red;'>No info available for this part.</span> 49230k_2 - <span style='color:red;'>No info available for this part.</span> 49230k_2 - <span style='color:red;'>No info available for this part.</span> 49230k_2 - <span style='color:red;'>No info available for this part.</span> 66396 - <span style='color:red;'>No info available for this part.</span> 90650 - <span style='color:red;'>No info available for this part.</span> 90650 - <span style='color:red;'>No info available for this part.</span> 90650 - <span style='color:red;'>No info available for this part.</span> 66786 - <span style='color:red;'>No info available for this part.</span> 66772_1 - <span style='color:red;'>No info available for this part.</span> 49228k_1 - <span style='color:red;'>No info available for this part.</span> 66397 - <span style='color:red;'>No info available for this part.</span> 66398 - <span style='color:red;'>No info available for this part.</span> 25622 - <span style='color:red;'>No info available for this part.</span> 55371 - <span style='color:red;'>No info available for this part.</span> 25731 - <span style='color:red;'>No info available for this part.</span> 66627 - <span style='color:red;'>No info available for this part.</span> 25731 - <span style='color:red;'>No info available for this part.</span> 56274 - <span style='color:red;'>No info available for this part.</span> 66519 - <span style='color:red;'>No info available for this part.</span> 56569 - <span style='color:red;'>No info available for this part.</span> 56776 - <span style='color:red;'>No info available for this part.</span> 56416 - <span style='color:red;'>No info available for this part.</span> 56315 - <span style='color:red;'>No info available for this part.</span> 66628 - <span style='color:red;'>No info available for this part.</span> 66405 - <span style='color:red;'>No info available for this part.</span> 91201 - <span style='color:red;'>No info available for this part.</span> 91201 - <span style='color:red;'>No info available for this part.</span> 66597 - <span style='color:red;'>No info available for this part.</span> 21500_1 - <span style='color:red;'>No info available for this part.</span> 66631 - <span style='color:red;'>No info available for this part.</span> 66631 - <span style='color:red;'>No info available for this part.</span> 66631 - <span style='color:red;'>No info available for this part.</span> 92095 - <span style='color:red;'>No info available for this part.</span> 21501_1 - <span style='color:red;'>No info available for this part.</span> 73897 - <span style='color:red;'>No info available for this part.</span> 71 - <span style='color:red;'>No info available for this part.</span> 66763_1 - <span style='color:red;'>No info available for this part.</span> 66599 - <span style='color:red;'>No info available for this part.</span> 56789_3 - <span style='color:red;'>No info available for this part.</span> 66525 - <span style='color:red;'>No info available for this part.</span> 90073 - <span style='color:red;'>No info available for this part.</span> 66763_1 - <span style='color:red;'>No info available for this part.</span> 66722 - <span style='color:red;'>No info available for this part.</span> 25944k - <span style='color:red;'>No info available for this part.</span> 25205k - <span style='color:red;'>No info available for this part.</span> 55137 - <span style='color:red;'>No info available for this part.</span> 55136 - <span style='color:red;'>No info available for this part.</span> 91167 - <span style='color:red;'>No info available for this part.</span> 56534 - <span style='color:red;'>No info available for this part.</span> 62290 - <span style='color:red;'>No info available for this part.</span> 66721 - <span style='color:red;'>No info available for this part.</span> 66778 - <span style='color:red;'>No info available for this part.</span> 67386 - <span style='color:red;'>No info available for this part.</span> 67387 - <span style='color:red;'>No info available for this part.</span> 90461 - <span style='color:red;'>No info available for this part.</span> 91331 - <span style='color:red;'>No info available for this part.</span> 90010 - <span style='color:red;'>No info available for this part.</span> 92190k - <span style='color:red;'>No info available for this part.</span> 66562k - <span style='color:red;'>No info available for this part.</span> 92210k - <span style='color:red;'>No info available for this part.</span> 56539k - <span style='color:red;'>No info available for this part.</span> 56224k - <span style='color:red;'>No info available for this part.</span> 56539k - <span style='color:red;'>No info available for this part.</span> 4424k - <span style='color:red;'>No info available for this part.</span> 4424k - <span style='color:red;'>No info available for this part.</span> 55020k - <span style='color:red;'>No info available for this part.</span> 55020k - <span style='color:red;'>No info available for this part.</span> 66624 - <span style='color:red;'>No info available for this part.</span> 56709w - <span style='color:red;'>No info available for this part.</span> 56709w - <span style='color:red;'>No info available for this part.</span> 56709w - <span style='color:red;'>No info available for this part.</span> 64311 - <span style='color:red;'>No info available for this part.</span> 56579 - <span style='color:red;'>No info available for this part.</span> 66379 - <span style='color:red;'>No info available for this part.</span> 66394 - <span style='color:red;'>No info available for this part.</span> 66389 - <span style='color:red;'>No info available for this part.</span> 64294 - <span style='color:red;'>No info available for this part.</span> 49230k_2 - <span style='color:red;'>No info available for this part.</span> 49231 - <span style='color:red;'>No info available for this part.</span> 66792 - <span style='color:red;'>No info available for this part.</span> 66793 - <span style='color:red;'>No info available for this part.</span> 66633 - <span style='color:red;'>No info available for this part.</span> 93173 - <span style='color:red;'>No info available for this part.</span> 93174 - <span style='color:red;'>No info available for this part.</span> 56436 - <span style='color:red;'>No info available for this part.</span> 80135 - <span style='color:red;'>No info available for this part.</span> 91230 - <span style='color:red;'>No info available for this part.</span> 91242 - <span style='color:red;'>No info available for this part.</span> 91402 - <span style='color:red;'>No info available for this part.</span> 91202 - <span style='color:red;'>No info available for this part.</span> 92842 - <span style='color:red;'>No info available for this part.</span> 59114 - <span style='color:red;'>No info available for this part.</span> 66130 - <span style='color:red;'>No info available for this part.</span> 66623 - <span style='color:red;'>No info available for this part.</span> 56131k_2 - <span style='color:red;'>No info available for this part.</span> 22511k - <span style='color:red;'>No info available for this part.</span> 56099 - <span style='color:red;'>No info available for this part.</span><br><br>49326 - <span style='color:red;'>No info available for this part.</span>
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