Home GM Th400 Transmission Billet Aluminum Low/Reverse Servo Piston

GM Th400 Transmission Billet Aluminum Low/Reverse Servo Piston

NOW $380.00
Or 4 interest-free payments of $95.00
In stock at 1 of our locations
🚛 Free NZ shipping
🔒 12 month warranty on all parts
NZ WOF compliant
🔧 Fitting available NZ wide

Features:
- Precision-engineered for GM Th400 compatibility
- Enhances shifting performance and reliability
- Durable aluminum construction for long-lasting use
- Ideal for performance builds or restoration projects

Billet Aluminum Low/Reverse Servo Piston for GM Th400 Transmission

Includes: 1 x Billet Aluminum Low/Reverse Servo Piston

Fits Models: GM Th400 Transmission

Model Years: 1965 - Present

Submodels: Various GM models with Th400

Engine Options: Compatible with multiple engine configurations

Description: Upgrade your GM Th400 transmission with this Billet Aluminum Low/Reverse Servo Piston. Designed for enhanced performance, it improves shifting response and durability. This piston is a perfect fit for various GM models, ensuring reliable operation and longevity.

Elevate your transmission's performance with this essential upgrade, ensuring smoother shifts and improved functionality. Perfect for enthusiasts seeking reliability and efficiency in their GM vehicles.

Shipping Information

Most orders land in 5–12 business days. We'll keep you updated at every step of the journey.


The Kren Bits journey:

  • Order received — Day 0
  • With fulfilment — Day 1–2
  • Heading to courier — Day 2–4
  • Shipped — Day 3–7
  • Almost there — Day 5–10
  • Delivered — Day 5–14

Where your part ships from:

Your order ships from the closest warehouse with available stock across our six-warehouse network — NZ, AU, TH, UK, US, and CN.


We email you at every real milestone — order received, with fulfilment, heading to courier, shipped, almost there, delivered. No chasing, no vague waits.


For more details, visit our Track Your Order page.

Product Enquiry

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