Skip to product information
12_deaa8952-10cb-4b76-adcb-d1f6128b8682 - Northline Parts

Throttle Body Valve Assembly for Chevrolet Silverado 1500 2500 HD 3500 977-859

Alligator_819_x_200_px - Northline Parts

The Aftermarket Parts Specialists

$173.59
Sale price  $173.59 Regular price 

In Stock

Ships Nationwide in 2–4 business days.

Questions? We're here to help!

Talk with a parts expert today

Call us

I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks

Edward H. — Verified customer

Throttle Body Valve Assembly for Chevrolet Silverado 1500 2500 HD 3500 977-859

Restore your vehicle's engine performance and throttle response with this high-quality aftermarket throttle body valve assembly. Specifically designed for Chevrolet Silverado 1500, 2500 HD, and 3500 models, this replacement part ensures smooth idle and efficient operation. This is a premium aftermarket component, providing a reliable and cost-effective alternative to original dealer parts while maintaining excellent durability and precision.

Key Features & Benefits

  • Restores proper engine idle and throttle control for improved drivability.
  • Precision-engineered for a direct fit and easy installation process.
  • Manufactured with high-grade materials to withstand engine heat and vibration.
  • A high-quality aftermarket solution designed for long-term reliability.
  • Cost-effective replacement for part number 977-859.

Compatible Models

  • Chevrolet Silverado 1500
  • Chevrolet Silverado 2500 HD
  • Chevrolet Silverado 3500

Product Specifications

  • Product Type: Throttle Body Assembly
  • Condition: Brand New
  • Part Type: Aftermarket Replacement
  • Interchange Part Number: 977-859
  • Fitment Type: Direct Bolt-On

Frequently Asked Questions

Is this an OEM part?
No, this is a premium aftermarket part designed to function as a direct replacement for the original equipment.

How do I confirm compatibility?
Please match the part number 977-859 with your existing unit or consult your vehicle’s service manual to ensure this component is correct for your specific engine and model year.


Important: This is a premium aftermarket part and is not manufactured by the original equipment manufacturer (OEM). Brand names and model numbers are used for reference purposes only. Compatibility may vary depending on the machine's serial number. Please verify fitment before purchase.

Need Any Help?

Work 1-on-1 With An Expert For:

  • The Right Part Selection
  • Our Best Pricing Tiers
  • Priority Customer Support
  • White Glove Installations
  • Flexible Payment Options

Service was professional and easy to work with. They kept me updated on my order and recommended a different part when the one I originally picked wasn’t going to work. Everything showed up as expected and the process was smooth overall.

- Customer, Chris D.

Complete This Form

You may also like

Keywords (Used as search references only) View IP policy.