| Image | Fits Model | Description | Part # | Price | Product Details | ||
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850B, 850C, 850D, 855C, 855D* | Rock Guard Set (5-Roller) | PV645 |
From
$3,625.00
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750H, 850D Long Track, 850E, 850G, 850H | Rock Guard Set (6-Roller) | PV646 |
From
$3,792.00
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750H, 850D LT, 850E, 850G, 850H, 855D, 855E | Front Left Track Guard | R56620 |
$258.00
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750H, 850B, 850C, 850D, 850E, 850G, 850H, 855C, 855D, 855E | Front Right Track Guard | R56629 |
$259.00
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750K, 850K | Front Left Track Guard | 419377A1 |
$259.00
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750K, 850K | Front Right Track Guard | 419378A1 |
$259.00
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850B, 850C, 850D, 855C, 855D | Center Track Guard | R52343 |
$328.00
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750H, 850D LT, 850E, 850G, 850H, 855D, 855E | Center Track Guard (Left) | R55833 |
$361.00
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750H, 850D LT, 850E, 850G, 850H, 855D, 855E | Center Track Guard (Right) | R55832 |
$363.00
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850B, 850C, 850D, 855C, 855D | Rear Left Guard | 0 | R52339 |
$218.00
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850B, 850C, 850D, 855C, 855D | Rear Right Guard | 0 | R52340 |
$224.00
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650, 650G, 650H, 750H, 850B, 850C, 850D, 850E, 850G, 850H, 855C, 855D, 855E | Rear Left Guard | R56633 |
$221.00
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750H, 850D LT, 850E, 850G, 850H, 855D, 855E | Rear Right Track Guard | R56646 |
$237.00
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850B, 850C, 850D, 855C, 855D | Rear Left Inner Cover | 0 | R44467 |
$75.00
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850B, 850C, 850D, 855C, 855D | Track Guard, Rear Right Inner | R44468 |
$78.00
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850B, 850C, 850D, 855C, 855D | Track Guard, Rear Left Outer | R54464 |
$78.00
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850B, 850C, 850D, 855C, 855D | Track Guard, Rear Right Outer | R54465 |
$74.00
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750H, 850D LT, 850E, 850G, 850H, 855D, 855E | Rear End Cover | R56637 |
$78.00
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750H, 850D LT, 850E, 850G, 850H, 855D, 855E | Track Guard Spacer Bolt & Nut | 413-12152 |
$15.00
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750H, 850D LT, 850E, 850G, 850H, 855D, 855E | Track Guard Spacer | D35698 |
$31.00
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Case 850 & 855 Rock Guards
Case 850 and 855 dozer and crawler loader rock guards designed to protect the undercarriage from debris, packed mud, and rock damage. This category fits Case 850B, 850C, 850D, 850E, 850G, 850H, 850K (select guards), and 855C, 855D, 855E machines, including 5-roller and 6-roller undercarriage configurations where specified. Coverage includes complete rock guard sets, front guards, center guards, rear guards, inner covers, spacers, and mounting hardware.
These Case 850/855 rock guards help prevent material buildup between the track chain, rollers, and frame, reducing premature wear on rollers, idlers, sprockets, and track links. Properly installed guards improve undercarriage life and reduce downtime in forestry, demolition, land clearing, and rocky soil conditions.
Fits:
850B
850C
850D (Standard & LT)
850E
850G
850H
855C
855D
855E
Common Repair Issues
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Bent or missing track guards
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Excessive debris packing in roller frame
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Premature roller and idler wear
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Broken or rusted guard mounting bolts
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Worn center guard plates on 5- or 6-roller frames
Parts Covered in This Category
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Complete rock guard sets (5-roller & 6-roller undercarriage)
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Front left and right track guards
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Center track guards (left, right, and single-piece styles)
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Rear left and right outer guards
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Rear inner track covers
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Rear end covers (LT models)
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Track guard spacers
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Track guard spacer bolt and nut kits
Rock guard sets are available for both standard and long track (LT) machines, with model-specific coverage such as 850B/850C/850D 5-roller configurations and 850D LT, 850E, 850G, and 850H 6-roller frames. Individual replacement guards allow targeted repairs without replacing a full set.
Key Notes:
Application: Undercarriage protection for Case 850 and 855 dozers and crawler loaders.
Coverage: 5-roller and 6-roller frames, including LT configurations where specified.
Function: Prevents debris buildup and protects rollers, idlers, and track chains.
Installation: Uses model-specific spacers and bolt kits for correct alignment and clearance.
Made In / Brands: Varies by part.
Why Choose Broken Tractor:
✅ Complete Rock Guard Sets & Individual Panels
✅ Exact Fit for 5 & 6 Roller Frames
✅ Heavy-Duty Steel Construction
