Which part numbers does V-Idler Pulley Replacement - John Deere AM134502 / AUC11238 replace?

V-Idler Pulley Replacement - John Deere AM134502 / AUC11238 is an aftermarket replacement for John Deere AM134502, AM138080, AUC11238; Additional source wording A-AUC11238; Stens 280-842. Match the number stamped on your original part before ordering, especially when the same mower family has several deck or model-year versions.

What are the key specifications of V-Idler Pulley Replacement - John Deere AM134502 / AUC11238?

Key specifications are Pulley Type: V-Idler Pulley; Height: 1-1/4"; Inside Diameter: 5/16"; Outside Diameter: 4". Compare these measurements with the removed part before installation.

Which mower models or equipment families is V-Idler Pulley Replacement - John Deere AM134502 / AUC11238 used with?

X300; X300R, X304, X320, X324, X340, X360. Use the model list as a fitment guide, then confirm the part number and dimensions because manufacturers may change deck parts within the same model family.

Which pulley measurements are most important?

Outer diameter 5/16". Match the belt profile and bearing or bore style before ordering.

What should be inspected during installation?

Clean the mounting area, compare the new part with the removed part, and check nearby wear items before putting the mower back into service.

V-Idler Pulley Replacement | John Deere AM134502 / AUC11238

Name: V-Idler Pulley Replacement | John Deere AM134502 / AUC11238
Brand: SYZAGRI
SKU: SYZ-PUL-AM134502
Availability: InStock

SKU:

SYZ-PUL-AM134502

Price excludes delivery and setup | Tax may apply

Center Hole:

Replaces Part No.

John Deere AM134502, AM138080, AUC11238; Additional source wording A-AUC11238; Stens 280-842

Compatible Models

### John Deere > ⚠️ Important: Verify the 4″ outside diameter, 5/16″ inside diameter, and 1-1/4″ height before ordering.

Product Description

This replacement pulley matches John Deere AM134502, AM138080, AUC11238; Additional source wording A-AUC11238; Stens 280-842 for selected mower deck drive applications. Use the OEM part number, pulley outside diameter, bore or spline style, belt position, and deck family to confirm fit before ordering. Key specifications include Height 1-1/4″, Inside Diameter 5/16″, Outside Diameter 4″.

Specifications

Attribute	Value
Pulley Type	V-Idler Pulley
Height	1-1/4″
Inside Diameter	5/16″
Outside Diameter	4″

V-Idler Pulley Replacement | John Deere AM134502 / AUC11238

Center Hole:

Replaces Part No.

Compatible Models

Product Description

Specifications

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