Home/Caterpillar 3116 & 3126 Parts/381251E Cat / Caterpillar BELT TENSIONER
Cat / Caterpillar BELT TENSIONER
Caterpillar · Models: 3126 / C7

381251E Cat / Caterpillar BELT TENSIONER

Commercial diesel cab. Match the listed part and engine identifiers before ordering.
1-Year WarrantyPAI Industries
$81.49$89.27 Save $7.78
In stock — confirm dispatch timing 4 available
Fitment details

Want us to check the fit? Share any details you have below. All fields are optional. Your request will be included with your order, and a specialist may contact you before fulfillment.

Secure Checkout Review Return Policy Warranty Details Ask About Same-Day Shipping

Compare Standard and Economy

Check application, pack quantity, and coverage
Standard Best coverage
$233.58
2-year warranty
PAI 381251JAKS-PAI-381251
In stock
Choose Standard
EconomySave $152.09 · 65% less
$81.49
12-month warranty
PAI 381251EJAKS-PAI-381251E
In stock · 4 available
Selected · add it below

Compare warranty, price, pack quantity, and included components. Confirm the part against your engine details before ordering. Compare warranties →

PAI Part #381251E
JAK'S Part #JAKS-381251E
Catalog refCATERPILLAR 120-6659
Catalog refCATERPILLAR 1206659
Catalog refCATERPILLAR 135-2151
Catalog refCATERPILLAR 1352151
Not sure it's the right fit? Call a specialist
(720) 445-6249
Talk to a tech or text a photo of your part tag — we'll confirm fitment before you buy
Complete The Rebuild

Suggested Additional Parts

Commonly sold with this product. These parts are sold separately.

  1. International / Navistar BELT TENSIONER
    480890EInternational / Navistar BELT TENSIONER In stock
    $73.68View ›
  2. Caterpillar C7/C9 Idler Pulley, PAI (OEM 1979642), Pack of 1
    381245Caterpillar C7/C9 Idler Pulley, PAI (OEM 1979642), Pack of 1 In stock
    $119.58View ›
  3. Detroit DIESEL 60 SERIES DETROIT ENGINES VALVE COVER GASKET
    631282Detroit DIESEL 60 SERIES DETROIT ENGINES VALVE COVER GASKET In stock
    $34.18View ›
  4. International / Navistar WATER PUMP
    481804International / Navistar WATER PUMP In stock
    $47.73View ›
381251E Cat / Caterpillar BELT TENSIONER
BrandPAI Industries
Engine MakeCaterpillar
Engine Model3126 · C7

BELT TENSIONER

Fits:

  • CATERPILLAR 3126 SERIES
  • CATERPILLAR C7 ENGINE

OEM cross-references:

  • CATERPILLAR 120-6659
  • CATERPILLAR 1206659
  • CATERPILLAR 135-2151
  • CATERPILLAR 1352151
  • CATERPILLAR 217-8938
  • CATERPILLAR 2178938
  • DETROIT DIESEL 23550238
  • MACK 4333-1687819C91
  • MACK 4333-1833688C1
  • MACK 4333-2028958C92
  • MACK 4333-3543883C1
  • NAVISTAR 3543883C1
  • NAVISTAR 2028958C92
  • NAVISTAR 2028958C91
  • NAVISTAR 1833688C1
  • NAVISTAR 1687819C92
  • NAVISTAR 1687819C91
  • MACK 87GB33
  • PAI 381251E

Warranty: 12 months