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Case 450 Series Track Adjusters & Recoil Springs

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Case 450 Series Track Adjusters & Recoil Springs parts list
Image Fits Model Description Part # Price Product Details
Case 450 Dozer Complete Track Tension Adjuster Assembly See Details 450 before serial # 3050800 Track Tension Adjuster D35504
$499.00
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Case 450 Dozer Track Adjuster Tensioner Used -- D48596 See Details 450 before serial # 3050800 Track Tension Adjuster D48596
$499.00
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Case Dozer Track Tension Adjuster D48596 See Details 450 after serial # 3050800 Track Tension Adjuster R29709
$593.00
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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
$736.00
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Track Adjuster for Case 450C Long Track Dozer, Part # R54459 See Details 450C LGP & Long Track, 550* Track Tension Adjuster R54459
$772.00
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Case 450 (Early) Track Recoil Spring Assembly (Left) -- PV603 | Broken Tractor See Details 450 Before Serial Number 3050800 Recoil Spring Assembly (Left) PV603
$897.00
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Case 450 (Early) Dozer Track Recoil Spring Assembly (Right) -- PV604 | Broken Tractor See Details 450 Before Ser # 3050800 Recoil Spring Kit (Right) PV604
$897.00
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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) 187916A2
$844.00
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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, 550, 550E, 550G, 550H Recoil Spring Assembly - (Right Hand) 187917A2
$844.00
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Case 450 Dozer Nut, Track Adjuster Spring (Early Serial #) -- D47539 | Broken Tractor See Details 450 Before Ser # 3050800 Nut, Track Spring D47539
$151.00
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Case 450 Dozer Bolt Dozer Track Adjuster Spring -- D38668 See Details 450 Before Ser # 3050800 Bolt, Track Spring D38668
$135.00
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Case 450 Dozer Track Tension Recoil Spring -- D35277 | Broken Tractor See Details 450 Before Ser # 3050800 Track Tension Spring D35277
$340.00
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Case Dozer Track Adjuster Protective Cover See Details 450*, 450B, 450C, 550, 550E, 550G, 550H Cover, Track Adjuster R57631
$96.00
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Case 450 (Early) Dozer Recoil Spring Cover Plate -- D35337 | Broken Tractor See Details 450 Before Ser # 3050800 Recoil Spring Cover D35337
$131.00
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Case 450 Track Adjuster Yoke D35507 See Details 450 Before Serial# 3050800 Track Adjuster Yoke (6 1/4" Between Bolt Holes) D35507
$264.00
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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
$291.00
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Track Adjuster Yoke for Case 450 Dozer R24561 See Details 450 After Serial# 3050800 Track Adjuster Yoke (4-Bolt Mount) R24561
$315.00
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Track Adjuster Yoke for Case 450C 455C 550G Dozer See Details 450B, 450C, 455, 455B, 455C, 550, 550E, 550G, 550H Track Adjuster Yoke 389390A1
$449.00
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Case 450 Track Adjuster Rod 11 Inch D35506 See Details 450 Before to Serial# 3050800 Track Adjuster Rod D35506
$127.00
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Chrome Track Adjuster Rod for Case 450C Dozer See Details 450 After Ser # 3050800, 450B, 450C, 455B, 455C Track Adjuster Rod R51793
$207.00
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Track Adjuster Rod for Case 450C Long Track Dozer See Details 450C Long Track, 550 Before Serial# JAK13967 Track Adjuster Rod R54460
$234.00
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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
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Track adjusters and recoil springs for Case 450 series dozers, including complete track tension adjusters, adjuster yokes, chrome rods, recoil spring assemblies, seal kits, and cover plates for both early and late serial-number machines.

Fits Models At A Glance

  • 450 Early: 450 Before Ser# 3050800
  • 450 Late: 450 After Ser# 3050800
  • 450B/C Series: 450B, 450C, 450C LGP, 450C Long Track
  • 455 Series: 455, 455B, 455C
  • 550 Series: 550, 550E, 550G, 550H

Key Notes

  • Application: Maintains proper track tension and cushions undercarriage shock loads
  • Serial Break: Many parts differ before and after Ser# 3050800 on the 450
  • Components: Complete adjusters, yokes, forks, rods, nuts, bolts, seal kits, recoil springs
  • Handing: Recoil spring assemblies available in left-hand and right-hand versions

Why Choose Broken Tractor

  • ✅ New and used adjuster and recoil options available
  • ✅ Serial-verified fitment for early and late 450 dozers
  • ✅ Fast shipping from two US locations

Frequently Asked Questions

How do I know if I need early or late track adjuster parts for a Case 450 dozer?

The serial break falls at Ser# 3050800 on the Case 450, and many adjuster and recoil parts differ before and after that number. Parts like the D-series (for example D35504, D35506, D35507) fit 450 dozers before Ser# 3050800, while parts such as R24561 and R29709 fit 450 dozers after that serial. Check your machine's serial number and match it to the part fitment, or confirm with the parts team before ordering.

What is the difference between the left-hand and right-hand recoil spring assembly for a Case 450 dozer?

Recoil spring assemblies are handed for the left or right side of the undercarriage. For late 450 dozers and 450B/450C machines we carry the Left-Hand Recoil Spring Assembly (SKU 187916A2) and the Right Hand version (SKU 187917A2). For early 450 dozers before Ser# 3050800 we offer the Left Recoil Spring Assembly (SKU PV603) and Right assembly (SKU PV604).

Does the Case 450 track adjuster yoke fit both early and late machines?

No, the yokes are serial-specific. The Track Adjuster Yoke SKU D35507 and Yoke Fork SKU D48595 fit 450 dozers before Serial# 3050800, while the 4-Bolt Yoke SKU R24561 fits 450 dozers after Serial# 3050800. We also carry yoke SKU 389390A1 for 450B, 450C, 455, 455B, 455C, and 550 series machines.

What length is the track adjuster chrome rod for a Case 450B dozer?

The Track Adjuster Chrome Rod (SKU R51793) is 11 inches long and fits the Case 450 after Ser# 3050800 along with 450B, 450C, 455B, and 455C dozers. For early 450 machines before Ser# 3050800 we carry a separate Track Adjuster Rod (SKU D35506). Match the part number to your serial number to be sure you get the correct rod.

Do you sell a complete track adjuster for the Case 450 dozer instead of individual parts?

Yes, Broken Tractor carries complete track tension adjusters. SKU D48596 fits the 450 before serial # 3050800, and SKU R51909, made in the USA, fits 450B, 455, 455B and other machines. For 450C Long Track and 550 dozers we offer the Complete Track Adjuster SKU R54459.

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Product: Category: Case 450 Series Track Adjusters & Recoil Springs Brand: Head Title: Case 450 Track Adjusters & Recoil Springs | Broken Tractor