Description
Product Overview
The USA Standard Gear Getrag Blocker is a precision‑machined component designed for the 3rd, 4th, and 5th gears of GM and Dodge manual transmissions, specifically the NV3500, NV3550, and G360 families. Constructed from hardened steel, the blocker offers exceptional wear resistance and maintains exact gear alignment under heavy loads. With a compact 4 × 4 × 4 inches form factor and a lightweight 10.4 oz design, it fits seamlessly into the transmission housing without requiring additional modifications.
Usage
This blocker is ideal for both professional automotive technicians and experienced DIY mechanics restoring or upgrading 1988‑1994 model year trucks and SUVs. Install it when rebuilding the transmission to eliminate gear clash, improve shift smoothness, and extend the life of synchronizer rings. It performs reliably in daily driving, off‑road adventures, and heavy‑duty towing scenarios where precise gear engagement is critical.

Why Choose Us
USA Standard Gear manufactures every blocker in the United States under strict quality‑control protocols. Each unit undergoes CNC machining verification and hardness testing to meet OEM specifications. Our commitment to exact tolerances ensures a plug‑and‑play fit, reducing installation time and preventing premature wear. Backed by a satisfaction guarantee, the blocker delivers the same reliability as original equipment.
Key Features
- Precision‑machined hardened steel for maximum durability
- Designed for GM and Dodge NV3500, NV3550, G360 transmissions
- Improves 3rd‑5th gear synchronization and shift feel
- Compact 4 × 4 × 4 inches dimensions for easy installation
- OEM‑grade fit with no additional modifications required
FAQ
Will this blocker fit a 1992 Dodge Ram?
Yes, it is compatible with Dodge models using the NV3500 transmission from 1988‑1994, including the 1992 Dodge Ram.
Do I need special tools to install the blocker?
Standard hand tools and a transmission jack are sufficient. The blocker bolts directly into the existing mounting points without the need for custom fixtures.
Can this part be used in a performance rebuild?
Absolutely. The hardened steel construction handles higher torque loads, making it suitable for performance or heavy‑duty applications.
Is the blocker covered by a warranty?
Yes, USA Standard Gear offers a one‑year limited warranty against manufacturing defects.
What is the part number for ordering?
The manufacturer part number is ZMSR290-14; use this when searching inventory or requesting a quote.






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