* 100% New and High/Premium Quality

* Fast shipping from California


Overdrive Pulley Increase Amp At Idle


17mmID*66mmOD*13mmBELT*22mmL

For Delco 10DN ER/EF; 10SI, 12SI, 15SI/Type

1 Groove 

Pulley ID: .67" or 17mm

Pulley OD: 2.63" or 66.7mm

Thickness: .931" or 23.64mm

Key width: .157" or 4mm

Belt Width: .512" or 13mm


Returns Policy

1.We gladly accept returns for any uninstalled item within 30 days of purchase.

2.All return requests must be submitted through your eBay account.

3.Buyers pay for return shipping fee.

4.Items to be returned must be in original, unused condition (including all packaging, tags and all accessories)

5.Full refund are not acceptable for items in compatibility reason (Returns are deduction of the original shipping cost.)


**Please Check Your ALTERNATOR Before Ordering To Make Sure This is The Correct Part.
**Part is guaranteed to function as designed; it is not guaranteed to fix your problem. Proper diagnosis is required.