Description
Product Overview
The DNJ Left Head Spacer Shim is engineered to restore proper head‑to‑block clearance on 3.5L‑4.0L V6 DOHC engines such as the Nissan VQ35DE and VQ40DE. Constructed from premium steel alloy, the shim offers a consistent 0.020 inch thickness, delivering the exact spacing required for optimal valve timing and compression. Its compact 15 x 12 x 2 inch dimensions and lightweight 13.3‑ounce design make installation straightforward while maintaining durability under high‑temperature conditions.
Usage
Designed for the left side of the engine block, this shim is ideal for both street and performance applications. Whether you are rebuilding a daily driver, preparing a track car, or conducting routine maintenance, the DNJ shim ensures a precise fit for 2002‑2016 Nissan, Suzuki, and Infiniti models. Install it during head gasket replacement or when addressing uneven head surfaces to improve engine efficiency and longevity.

Why Choose Us
DNJ Engine Components brings over 30 years of expertise in domestic and Japanese engine parts. Each shim undergoes rigorous quality control, guaranteeing tolerance within ±0.001 inch. Our partnership with DNJ ensures you receive a genuine OEM‑compatible component backed by a satisfaction guarantee, reducing the risk of premature wear and costly repairs.
Key Features
- Exact 0.020 inch thickness for precise head alignment
- High‑grade steel alloy resists warping under heat
- Left‑side engine block placement for VQ35DE/VQ40DE
- Lightweight 13.3 oz design simplifies handling
- Fits 2002‑2016 Nissan, Suzuki, Infiniti V6 models
FAQ
Is this shim compatible with my 2005 Nissan Altima?
Yes, the DNJ left head spacer shim is designed for the VQ35DE engine found in 2002‑2016 Nissan Altima models.
Do I need to replace the right side shim as well?
Only replace the left side shim if your service instructions specify it. The right side typically uses a separate part with its own specifications.
Can I install the shim myself?
Installation is straightforward for anyone with basic mechanical skills. Ensure the engine block surface is clean and follow the torque specifications in your service manual.
What warranty does DNJ provide?
DNJ offers a limited one‑year warranty covering material defects and dimensional inaccuracies.
Will this shim affect my engine’s performance?
The shim restores proper head clearance, which can improve compression consistency and reduce unwanted wear, potentially enhancing overall engine performance.






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