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⚙️ Keep your engine’s rhythm flawless — don’t let timing slip away!
The Dorman 420-120 Engine Timing Chain Tensioner is a precision-engineered direct replacement part designed to restore optimal chain tension on balance shafts for select GM vehicles. Manufactured to OEM standards with durable materials and backed by extensive automotive expertise, it ensures reliable, long-term performance. Confirm exact fitment with the garage tool before purchase to maintain your engine’s smooth operation.
| Manufacturer | Dorman Products |
| Brand | Dorman |
| Model | 420-120 |
| Item Weight | 3.2 ounces |
| Product Dimensions | 2.2 x 2.2 x 2.8 inches |
| Item model number | 420-120 |
| Exterior | Machined |
| Manufacturer Part Number | 420-120 |
| OEM Part Number | 90537300; 95383; BT5383; SK420120; T66188; 90537300 |
| Position | Center |
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