Gates 39052 belt tensioner for the 2008-2010 Ford F-250 Super Duty V8 6.4L and other vehicles holds the accessory drive belt under steady tension. Also known as a serpentine belt tensioner, it carries one pulley for a V-ribbed belt and is built with the same or improved technology and materials as the original equipment part, for a factory match.
- Gates DriveAlign automatic belt drive tensioner
- Patented labyrinth seal protects the internal components
- Patented vibration-damping system absorbs extreme vibration to improve tensioner, belt and accessory life
- Torsional round spring design for reliability and consistent tension
- Single pulley with a smooth backside contact surface for a V-ribbed belt
Quick facts
- Part: Gates 39052 belt tensioner
- Also called: serpentine belt tensioner
- Fits: 2008-2010 Ford F-250 Super Duty V8 6.4L and other vehicles
- Position: Air conditioning
- Material: Steel
- Condition: New
A worn tensioner can show up as belt squeal, a rough-turning or wobbling pulley, or uneven belt wear, though a worn belt or accessory can produce similar noises. Find out what is behind the noise first: with the engine off and cool, look over the belt and pulley for cracks, glazing or damage, and leave tension and running tests to a shop.
Fits
The vehicles it fits include the 2008-2010 Ford F-350 Super Duty V8 6.4L, which takes one tensioner, and the 2008-2010 Ford F-450 Super Duty V8 6.4L. If your truck is not named here, find it in the "Vehicles it fits" section on this page.
Specifications
Fit and size
- Position: Air conditioning
- Quantity per vehicle: 1
- Outside diameter: 90 mm (3.54 in)
- Width: 29.5 mm (1.16 in)
- Bearing bore inside diameter: 17 mm (0.67 in)
- Mounting holes: 1
Build and materials
- Material: Steel
- Belt type: V-ribbed
- Pulley contact surface: smooth/backside, not flanged
- Grade type: OE Exact
- Condition: New
- Country of origin: Mexico
In the box
One belt tensioner and a bolt.
Interchange: 419-353 · BT-91
7C3Z 6B209 B · 4026 · 305629 · 89629 · 49419 · 999826A · 999826
This part cross-references / interchanges with the following part numbers:
39052, 4026, 305629, 89629, 419-353, 7C3Z 6B209 B, 49419, 999826A, BT-91, 999826
Frequently Asked Questions
Does the Gates 39052 belt tensioner fit a 2008-2010 Ford F-350 Super Duty V8 6.4L?
Yes. Gates 39052 fits the 2008-2010 Ford F-350 Super Duty V8 6.4L, and each truck takes one. Owners of other trucks can find theirs in the "Vehicles it fits" section.
Does this Gates drive belt tensioner come with its bolt?
Yes. The package holds the belt tensioner and a bolt.
What size is the Gates 39052 tensioner?
Gates 39052 measures 90 mm (3.54 in) outside diameter and 29.5 mm (1.16 in) wide, with a 17 mm (0.67 in) bearing bore. Its pulley has a smooth surface for a V-ribbed belt.
Can a worn belt tensioner make a V-ribbed belt squeal or wear unevenly?
Yes, it can. Squeal, a wobbling pulley or uneven belt wear can point to a tired tensioner, but a worn belt or accessory can produce similar signs, so a shop can test the rest.
What does the labyrinth seal in this tensioner do?
The patented labyrinth seal protects the tensioner's internal components. A patented vibration-damping system also absorbs extreme vibration to improve tensioner, belt and accessory life.
