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Case 450, 450B, 450C, 455, 455B & 455C Track Parts

Fits Models At A Glance: Case Dozers: 450C, 550, 550E Key Notes: Part Number: R52401 Weight: 1.0 lbs (0.45 kg) Application: Track idler mounting spacer plate for Case crawler dozers Design: Features two threaded bolt holes for secure idler...

Fits Models At A Glance: Case Dozers: 450 (after serial #3050800) 450B, 450C, 455C 550E, 550G Key Notes: Weight: 100 lbs (45.4 kg) Part #: 187916A2 Side: Left-hand recoil spring assembly Includes: Spring, top roller stand, and...

Fits Models At A Glance Case Dozers: 450 (After Serial # 3050800) 450B 450C 455C 550E 550G Key Notes Part Number: 187917A2 Weight: 100.00 lbs (45.36 kg) Side: Right Hand Application: Track recoil spring assembly for maintaining...

Fits Models At A Glance: Case 450 Loader (Before Serial #3050800) Case 450 Dozer (Before Serial #3050800) Key Notes: Part Number: PV625Weight: 315 lbs (142.88 kg)Includes: (2) Front Left Guards (2) Front Right Guards (2) Rear Left...

Fits Models At A Glance: Case Dozer: 450 (before serial #3050800) Key Notes: Weight: 80 lbs (36.3 kg) Part #: PV603 Side: Left-hand recoil spring assembly Application: Provides track tension and shock absorption for early Case 450...

Fits Models At A Glance: Case Dozers: 450 before Serial # 3050800 Key Points: Manufacturer: PVE Products Origin: Made in USA Center to Center Mounting Holes: 7-3/8 inches Overall Length: 12-1/2 inches Replaces Part #: D48596 Includes: Housing, Rod,...

Fits Models At A Glance: Case Dozers: 450 before Serial # 3050800 Two Mounting Bolt Holes Key Points: Manufacturer: PVE Products Origin: Made in USA Center to Center Mounting Holes: 6-1/4 inches Overall Length: 12-1/2 inches Replaces Part #:...

Fits Models At A Glance: Case Dozers: 450 After Serial # 3050800 Key Points: 4-Bolt Mount Manufacturer: PVE Products Origin: Made in USA Overall Length: 12-1/2 inches Replaces Part #: D48596 Includes: Housing, Rod, Seals, Grease zerk, Protective...

Fits Models At A Glance: Case Dozers: 550 (Before Serial # JAK13967) 450C Long Track and LGP (6 Bottom Rollers) Key Features: Origin: Made in the USA Part Number: Replaces R54459 Weight: 45 lbs. Manufacturer: PVE Products Why Choose Broken...

Fits Models At A Glance: Case: 450B, 455, 455B Case: 450C, 455C: Standard Track (5-Bottom Rollers) Key Notes: Origin: Made in the USA. Function: Adjusts and holds track tension. Replaces Part # R51909. Manufacturer: PVE Products,...

Fits Models At A Glance: Case 450 Dozer (After Serial #3050800) Case 450B Dozer Key Notes: Part Number: PV630Weight: 315 lbs (142.88 kg)Includes: (2) Front Left Guards (2) Front Right Guards (2) Rear Left Guards (2) Rear Right Guards (4)...

Fits Models At A Glance: Case Dozers: 450 before serial # 3050800 Key Notes: Part Number: D35507 Mounting: 2-bolt Hole Spacing: 6-1/4" center to center (158.75 mm) Includes: Grease fitting Weight: 16 lbs (7.26 kg) Origin: Made in the...

Fits Models At A Glance: Case 450C Dozer (5-Roller Undercarriage) Case 455C Dozer (5-Roller Undercarriage) Case 550 Dozer (5-Roller Undercarriage) Key Notes: Part Number: PV635Weight: 327 lbs (148.32 kg)Includes: (2) Front Left Guards (2)...

Fits Models At A Glance: Case Dozer: 450 (before serial #3050800) Key Notes: Weight: 80 lbs (36.3 kg) Part #: PV604 Side: Right-hand recoil spring assembly Application: Provides consistent track tension and impact cushioning for early Case...

Fits Models At A Glance: Case Dozer: 450 (before serial #3050800) Key Notes: Weight: 28 lbs (12.7 kg) Part #: D35355 Side: Left-hand bracket Application: Mounts the top track roller to the frame and maintains track support Function: Ensures...

Fits Models At A Glance: Case Dozer: 450 (before serial #3050800) Key Notes: Weight: 28 lbs (12.7 kg) Part #: D35354 Side: Right-hand bracket Application: Mounts the top roller securely to the track frame Function: Supports and aligns the...

Fits Models At A Glance: Case 450C LT Dozer (6-Roller Undercarriage) Case 455C LT Crawler Loader (6-Roller Undercarriage) Case 550 Dozer (6-Roller Undercarriage) Key Notes: Part Number: PV640Weight: 372 lbs (168.73 kg)Includes: (2) Front Left...

Fits Models At A Glance: Case Dozer: 450 (before serial #3050800) Key Notes: Weight: 40 lbs (18.1 kg) Part #: D35277 Application: Recoil spring assembly for track tensioning system Function: Maintains proper track tension and absorbs shock...

Fits Models At A Glance: Case 450 Dozer and Crawler Loader Case 450B Dozer and Crawler Loader Case 450C Dozer and Crawler Loader Case 455C Crawler Loader Key Notes: Part Number: R36673Weight: 30 lbs (13.61 kg)Application: Center track guard for...

Fits Models At A Glance: Case Dozers: 450 (Before serial # 3050800) Key Notes: Part Number: D48595 Center-to-Center Hole Spacing: 7-3/8" (187.33 mm) Mounting Style: 2-bolt Includes: Grease fitting for easy maintenance Weight: 18 lbs (8.16...

Fits Models At A Glance: Case Dozer: 450 (before serial #3050800) Key Notes: Weight: 8 lbs (3.6 kg) Part #: D38668 Application: Secures the recoil spring in the track adjuster assembly Function: Maintains spring compression and allows for...

Fits Models At A Glance: Case 450C Dozer Case 550 Dozer (up to serial # JAK0013968) Case 550E Dozer Case 550G Dozer Case 550H Dozer Case 455C Crawler Loader Key Notes: Part Number: 141196A1 Weight: 40 lbs (18.14 kg) Application: Center...

Fits Models At A Glance: Case 450 Dozer and Crawler Loader Case 450B Dozer and Crawler Loader Case 450C Dozer and Crawler Loader Case 455C Crawler Loader Case 550 Dozer Key Notes: Part Number: R36674 Weight: 24 lbs (10.89...

Fits Models At A Glance: Case Dozers: 450 (After serial # 3050800) Key Notes: Part Number: R24561 Mounting Style: 4-bolt Mounting Pattern: 7-3/4" x 2-1/8" (196.85 mm x 53.98 mm) Weight: 20 lbs (9.07 kg) Manufacturer: PVE Products Origin:...

Fits Models At A Glance: Case Dozer: 450 (up to serial #3050800) Key Notes: Weight: 6 lbs (2.7 kg) Part #: D47539 Application: Secures the recoil spring in the track adjuster assembly Function: Provides threaded engagement for track spring...

Fits Models At A Glance: Case 450 Dozer and Crawler Loader Case 450B Dozer and Crawler Loader Case 450C Dozer and Crawler Loader Case 455C Crawler Loader Case 550 Dozer Key Notes: Part Number: R36675 Weight: 24 lbs (10.89 kg) Application:...

Fits Models At A Glance: Case Dozer: 450 (before serial #3050800) Fits left-hand or right-hand side Key Notes: Weight: 13 lbs (5.9 kg) Part #: D35337 Application: Protects the recoil spring assembly and track adjuster from debris and...

Fits Models At A Glance: Case 450 Dozer Case 450B Dozer Key Notes: Part Number: R36676 Weight: 15 lbs (6.80 kg) Application: Rear left track guard for Case dozers. Notes: Fits Case 450 and 450B dozer models. Manufactured by PVE Product. Made in...

Fits Models At A Glance: Case Dozers: 450 (Before serial # 3050800) Key Notes: Part Number: D48592 Side: Left-hand bracket (used on the left side of each track) Compatible With: D48596 Track Adjuster Weight: 27 lbs (12.25 kg) Manufacturer:...

Fits Models At A Glance: Case Dozers: 450 (Before serial # 3050800) Key Notes: Part Number: D48593 Side: Right-hand bracket (used on right side of each track) Compatible With: D48596 Track Adjuster Weight: 26 lbs (11.79 kg) Manufacturer:...

Fits Models At A Glance: Case 450 Dozer Case 450B Dozer Key Notes: Part Number: R36677Weight: 15 lbs (6.80 kg)Application: Rear right track guard for Case dozers.Notes: Fits Case 450 and 450B dozer models. Why Choose Broken Tractor? ✅ Precision...

Fits Models At A Glance: Case 450C Dozer and Crawler Loader Case 455C Crawler Loader Case 550 Dozer Case 550E Dozer Key Notes: Part Number: R47465 Weight: 18 lbs (8.16 kg) Application: Rear left track guard for Case dozers and crawler loaders...

Fits Models At A Glance: Case 450C Dozer and Crawler Loader Case 455C Crawler Loader Case 550 Dozer Case 550E Dozer Key Notes: Part Number: R47466 Weight: 18 lbs (8.16 kg) Application: Rear right track guard for Case dozers and crawler loaders...

Fits Models At A Glance: Case 450 Dozer and Crawler Loader Case 450B Dozer and Crawler Loader Case 450C Dozer and Crawler Loader Case 550E Dozer Key Notes: Part Number: R36667 Weight: 4.7 lbs (2.13 kg) Application: Sprocket guard cover for Case...

Fits Models At A Glance: Case Dozers: 450 after Serial # 3050800 Case Dozers: 450B, 450C, 550, 550E, 550G, 550H Key Points: Manufacturer: PVE Products Origin: Made in USA Part #: R57631 Weight: 3 lbs Fits: Left or Right-Hand Side Why Choose...

Fits Models At A Glance: Case Dozers: 450 (Before serial # 3050800) Key Notes: Part Number: D35506 Length: 11" (279.4 mm) Weight: 8 lbs (3.63 kg) Manufacturer: PVE Products Origin: Made in the USA Application: Track tension adjuster rod...

Fits Models At A Glance: Case Dozers: 450 (After serial # 3050800) 450B 450C (Standard Track) Case Crawler Loaders: 455B 455C Key Notes: Part Numbers: R51793, R29669 Length: 11" (279.4 mm) Weight: 8 lbs (3.63 kg) Condition:...

Fits Models At A Glance: Case Dozers & Crawler Loaders: 450B, 450C 455, 455B, 455C 550, 550E, 550G, 550H Key Notes: Part Number: 389390A1 Track Compatibility: Fits right or left track side Includes: Grease fitting for easy...

Fits Models At A Glance: Case Dozers: 450C (Long Track only) 550 (Before serial # JAK13967) Key Notes: Part Number: R54460 Rod Length: 20" (508 mm) Weight: 15 lbs (6.8 kg) Manufacturer: PVE Products Origin: Made in the USA Application:...

Fits Models At A Glance: Case 450 Dozer (Before Serial #3050800) Key Notes: Part Number: 413-8120Weight: 1 lb (0.45 kg)Application: Track guard bolt for Case 450 dozers.Notes: Specifically fits Case 450 dozers built before serial #3050800. Why Choose...

Fits Models At A Glance: Case 450 Dozer (After Serial # 3050800) Case 450B Dozer Case 450C Dozer Case 550 Dozer Case 550E Dozer Key Notes: Part Number: 413-8136Weight: 1 lb (0.45 kg)Application: Track guard bolt for Case dozersNotes: Fits...

Fits Models At A Glance: Case 450 Dozer (Before Serial #3050800) Case 450 Crawler Loader (Before Serial #3050800) Key Notes: Part Number: D35372 Weight: N/A Dimensions: Approx. 5-3/4 in (146 mm) long Application: Track guard spacer for Case dozers...

Fits Models At A Glance: Case 450 Dozer and Crawler Loader (After Serial #3050800) Case 450B Dozer and Crawler Loader Case 450C Dozer and Crawler Loader Case 455C Crawler Loader Case 550 Dozer Case 550E Dozer Key Notes: Part Number:...

Fits Models At A Glance: Case Dozers and Loaders: 450, 450B, 450C, 455C, 550, 550E, 550G, 550H Key Notes: Specifications: Designed for use with R58710 Track Idler Part Number: 144392A3 Weight: 3 lbs. Usage: Helps extend the life of your Case...

Fits Models: Case Dozers: 450, 450B, 450C, 455, 455B, 455C, 550, 550E, 550G, 550H. Key Points: Contains all necessary seals and a retainer ring to rebuild one track adjuster. Part Number: 907002. Weight: 0.3 lbs. Origin: Made in USA Brand: Bulldog or...

Fits Models At A Glance: Case Dozers: 450C, 550, 550E, 550G, 550H, 650H Case Crawler Loader: 455C Use Note: Two guide plates are used per idler Key Notes: Weight: 4 lbs (1.8 kg) Part #: R49772 Application: Guides the idler to maintain track...

Image Fits Model Description Part # Price Product Details
Track idler spacer plate for Case 450C dozer R52401 See Details 450C, 550, 550E Track Idler Spacer Plate R52401 $76.00 View Info
Case 450, 450B, 450C, 455C, 550E, 550G Dozer Track Recoil Spring Assembly Left Hand Top Roller Stand and Cover -- 187916A2 See Details (450 After Ser# 3050800), 450B, 450C, 455C, 550E, 550G Recoil Spring Assembly - (Left Hand) 0 187916A2 $775.00 View Info
Case Dozer Track Recoil Spring Assembly Right Spring Cover 450, 450B, 450C, 455C, 550E, 550G -- 187917A2 See Details (450 After Ser# 3050800), 450B, 450C, 455C, 550E, 550G Recoil Spring Assembly - (Right Hand) 187917A2 $775.00 View Info
Case 450 Track Rock Guard Set for Loader and Dozer (Before Serial #3050800) See Details 450 Before Serial #3050800 Rock Guard Set 0 PV625 $2,930.00 View Info
Case 450 (Early) Track Recoil Spring Assembly (Left) -- PV603 | Broken Tractor See Details 450 Before Ser # 3050800 Recoil Spring Kit (Left) 0 PV603 $875.00 View Info
Case 450 Dozer Track Adjuster Tensioner Used -- D48596 See Details 450 before serial # 3050800 Track Tension Adjuster D48596 $444.00 View Info
Case 450 Dozer Complete Track Tension Adjuster Assembly See Details 450 before serial # 3050800 Track Tension Adjuster D35504 $440.00 View Info
Case Dozer Track Tension Adjuster D48596 See Details 450 after serial # 3050800 Track Tension Adjuster R29709 $526.00 View Info
Track Adjuster for Case 450C Long Track Dozer, Part # R54459 See Details 450C LGP & Long Track, 550* Track Tension Adjuster R54459 $688.00 View Info
Case Dozer Complete Track Adjuster Tensioner 450B, 450C, 455, 455B, 455C Made in USA -- R51909 See Details 450B, 455, 455B, 450C*, 455C* Track Tension Adjuster R51909 $657.00 View Info
Case 450B Track Rock Guard Set for Dozer (After Serial #3050800) See Details 450B, (450 After Serial # 3050800) Rock Guard Set PV630 $2,930.00 View Info
Case 450 Track Adjuster Yoke D35507 See Details 450 Before Serial# 3050800 Track Adjuster Yoke (6 1/4" Between Bolt Holes) D35507 $264.00 View Info
Case Dozer Track Rock Guard Set (PV635) See Details 450C, 455C, 550 Rock Guard Set (5-Roller Undercarriage) 0 PV635 $2,930.00 View Info
Case 450 (Early) Dozer Track Recoil Spring Assembly (Right) -- PV604 | Broken Tractor See Details 450 Before Ser # 3050800 Recoil Spring Kit (Right) 0 PV604 $875.00 View Info
Case 450 (Early) Dozer Top Roller Mounting Bracket (Left) -- D35355 | Broken Tractor See Details 450 Before Ser # 3050800 Top Roller Mounting Bracket (Left) 0 D35355 $335.00 View Info
Case 450 Dozer Top Track Roller Mounting Bracket Right Hand -- D35354 See Details 450 Before Ser # 3050800 Top Roller Mounting Bracket (Right) 0 D35354 $335.00 View Info
CASE 450C LT, 455C LT, 550 Dozer, Crawler Loader Rockguard Set See Details 450C, 550E Rock Guard Set (6-Roller Undercarriage) 0 PV640 $3,102.00 View Info
Case 450 Dozer Track Tension Recoil Spring -- D35277 | Broken Tractor See Details 450 Before Ser # 3050800 Track Tension Spring 0 D35277 $310.00 View Info
Case Dozer Center Track Guard (R36673) See Details 450, 450B, 450C, 455C Center Guard (5-Roller Undercarriage) 0 R36673 $258.00 View Info
Yoke Fork for Case 450 Dozer Track Adjuster D48595 See Details 450 Before Serial# 3050800 Track Adjuster Yoke (7 3/8" Between Bolt Holes) D48595 $264.00 View Info
Case 450 Dozer Bolt Dozer Track Adjuster Spring -- D38668 See Details 450 Before Ser # 3050800 Bolt, Track Spring D38668 $125.00 View Info
Case Dozer Center Track Guard (141196A1) See Details 450C, 455C, 550E Center Guard (6-Roller Undercarriage) 0 141196A1 $258.00 View Info
Case Dozer Front Left Track Guard (R36674) See Details 450, 450B, 450C, 455C, 550 Case Dozer Front Left Track Guard 0 R36674 $208.00 View Info
Track Adjuster Yoke for Case 450 Dozer R24561 See Details 450 After Serial# 3050800 Track Adjuster Yoke (4-Bolt Mount) R24561 $288.00 View Info
Case 450 Dozer Nut, Track Adjuster Spring (Early Serial #) -- D47539 | Broken Tractor See Details 450 Before Ser # 3050800 Nut, Track Spring D47539 $140.00 View Info
Case Dozer Front Right Track Guard (R36675) See Details 450, 450B, 450C, 455C, 550 Case Dozer Front Right Track Guard 0 R36675 $208.00 View Info
Case 450 (Early) Dozer Recoil Spring Cover Plate -- D35337 | Broken Tractor See Details 450 Before Ser # 3050800 Recoil Spring Cover 0 D35337 $115.00 View Info
Case Dozer Rear Left Track Guard (R36676) See Details 450, 450B Case Dozer Rear Left Track Guard 0 R36676 $208.00 View Info
Left Idler Bracket for Case 450 Dozer D48592 See Details 450 Before Serial # 3050800 Idler Bracket (Left) (Used with D48596 Adjuster) D48592 $364.00 View Info
Right Idler Bracket for Case 450 Dozer D48593 See Details 450 Before Ser # 3050800 Idler Bracket (Right) (Used with D48596 Adjuster) D48593 $364.00 View Info
Case Dozer Rear Right Track Guard (R36677) See Details 450, 450B Case Dozer Rear Right Track Guard 0 R36677 $208.00 View Info
Case Rear Left Track Guard (R47465) See Details 450C, 455C, 550, 550E Case Rear Left Track Guard 0 R47465 $208.00 View Info
R47466 Case Rear Right Track Guard Dozer See Details 450C, 455C, 550, 550E Case Rear Right Track Guard 0 R47466 $208.00 View Info
Case Dozer Sprocket Guard Cover (R36667) See Details 450, 450B, 450C, 550, 550E Case Dozer Sprocket Guard Cover 0 R36667 $65.00 View Info
Case Dozer Track Adjuster Protective Cover See Details 450*, 450B, 450C, 550, 550E, 550G, 550H Cover, Track Adjuster R57631 $86.00 View Info
Case 450 Track Adjuster Rod 11 Inch D35506 See Details 450 Before to Serial# 3050800 Track Adjuster Rod D35506 $114.00 View Info
Chrome Track Adjuster Rod for Case 450C Dozer See Details 450 After Ser # 3050800, 450B, 450C, 455B, 455C Track Adjuster Rod R51793 $188.00 View Info
Track Adjuster Yoke for Case 450C 455C 550G Dozer See Details 450B, 450C, 455, 455B, 455C, 550, 550E, 550G, 550H Track Adjuster Yoke 389390A1 $412.00 View Info
Track Adjuster Rod for Case 450C Long Track Dozer See Details 450C Long Track, 550 Before Serial# JAK13967 Track Adjuster Rod R54460 $214.00 View Info
Case 450 Track Guard Bolt -- 413-8120 See Details 450 Before Serial #3050800 Case 450 Track Guard Bolt for Dozer (Before Serial #3050800) 0 413-8120 $12.00 View Info
Case Dozer Track Guard Bolt (413-8136) See Details (450 After Serial # 3050800), 450B, 450C, 550, 550E Case Dozer Track Guard Bolt 0 413-8136 $13.50 View Info
Case Dozer Track Guard Spacer -- D35372 See Details 450 Before Serial #3050800 Case 450 Track Guard Spacer for Dozer and Loader (Before Serial #3050800) D35372 $15.00 View Info
Case 450, 450B, 450C, 455C, 550, 550E Track Guard Spacer for Dozer and Loader See Details (450 After Serial # 3050800), 450B, 450C, 550, 550E Case 450, 450B, 450C, 455C, 550, 550E Track Guard Spacer for Dozer and Loader 0 R36665 $16.00 View Info
Track Idler Wear Replacement Kit for Case 450, Part 144392A3 See Details 450, 450B, 450C, 455C, 550, 550E, 550G, 550H Wear Kit, Track Idler 144392A3 $148.00 View Info
Case Dozer Track Adjuster Seal Kit -- 907002 | Broken Tractor See Details 450, 450B, 450C, 455, 455B, 455C, 550, 550E, 550G, 550H Track Adjuster Seal Kit 907002 $39.00 View Info
Case Idler Outer Guide Plate (R49772) See Details 450C, 455C, 550, 550E, 550G, 550H, 650H Idler Guide Plate R49772 $39.00 View Info

Case 450 Series Dozer Track Related Parts

Fits Models At A Glance:

  • Case Dozer 450, 450B, 450C

  • Case Crawler Loader 455, 455B, 455C

Key Notes:

  • Application: Replacement undercarriage and track parts for Case 450 dozers and 455 crawler loaders (all B & C variants included)

  • Components Available: Track adjusters, recoil springs, track rollers, idlers, sprockets, and rock guards

  • Function: Restores proper track tension and stability, reduces wear, and improves machine performance

  • Material: Heavy-duty forged steel and precision-machined components for long wear life

  • Location: Complete track system — front idlers, sprockets, recoil springs, rollers, and side frame rock guards

  • Part Numbers: Multiple OEM cross references (included in product-level listings)

Why Choose Broken Tractor:

  • ✅ Track Parts for Case Dozers & Loaders (450 & 455 Series)

  • ✅ Heavy-Duty Construction for Maximum Durability

  • ✅ Fast Shipping and Expert U.S.-Based Support

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Product: Category: Case 450, 450B, 450C, 455, 455B & 455C Track Parts Brand: Head Title: 450 Series | Broken Tractor