DAY89955

Belt Tensioner (D11/D13)
4.5 Ratings
Part # DAY89955
UPC/GTIN# 601961390263
Availability In Stock (10)
Feature Specification
Part number Dayco 89955 accessory drive belt tensioner assembly ​
Application Volvo D11/D13 (and related Volvo truck engines) serpentine accessory drive ​
Belt type Serpentine / multi‑rib ​
Number of pulleys 1 ​
Pulley type Flat pulley for multi‑rib belt ​
Housing material Heavy‑duty cast aluminum tensioner body ​
Spring design Flat‑spring, automatic tensioning ​

Includes

  • Complete automatic belt tensioner assembly (pre‑assembled body and pulley).​
  • Pre‑installed flat pulley with bearing, ready for installation on the engine bracket.​
  • Designed to maintain proper belt tension on Volvo D11/D13 engine accessory systems (alternator, A/C, etc.), reducing slip, noise, and premature belt wear.​
  • Flat‑spring design and cast aluminum housing provide stable tension with high durability under heavy‑duty diesel operating conditions.​
  • Direct bolt‑on replacement for the corresponding Volvo/Mack OEM tensioner numbers listed below, with OE‑equivalent fit and function.

Cross Reference / Part Interchange

Manufacturer / Brand Part Number(s) Notes
Dayco 89955 ​  
Volvo / Mack (OEM) 1956748, 446172  ​  
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