Pilida 551693 LS Engine Throttle Body Bypass Plate Set | DBC/DBW Gen 3 & Gen 4, LS Series Compatible

Overview

Introducing the Pilida 551693 throttle body bypass plate set, engineered for LS Series engines (Gen III/IV). This kit helps cap off the front or rear coolant bleed passages in the cylinder heads, supporting an organized cooling system workflow during maintenance and servicing. Built for durability and reliable performance, it pairs precise fit with straightforward installation so you can focus on the task at hand.

Premium build and complete kit

• 6016 billet aluminum with a natural finish for anti-rust durability and long-lasting use
• Includes two O-rings, two bolts, and two coolant port covers (one left, one right)
• Designed to cap off coolant bleed passages in LS cylinder heads for a clean, sealed setup

All components are chosen to complement LS engines across models and generations, delivering a cohesive solution for a tidy cooling system work-in-progress. The kit’s symmetrical design ensures a balanced installation on both sides of the engine bay, reducing guesswork and improving handling during upgrades or routine maintenance.

Who is this for and how it helps

• Fits Gen III/IV LS engines from 1997–2014, including LSX, LS1, LS3, LS2, LQ4, LQ9, LS6, L92, L99, L33, LR4, LM7 and more
• Serves as a practical accessory when you need to cap coolant bleed paths during head work or system service
• Durable hardware minimizes the need for frequent replacements and keeps a clean, tight seal

Quality assurance and after-sales support

Pilida stands by integrity and quality. The product ships with a 30-day refund window and a 12-month free replacement policy. For any questions or issues, contact us via Amazon messaging and we’ll respond promptly.

Practical notes

• Simple, direct installation with included bolts and O-rings
• Designed to integrate with LS cylinder head ports without modifying other components
• Iconic natural aluminum finish provides a clean, professional look under the hood

With Pilida, you’re choosing a thoughtfully designed accessory that aligns with a practical approach to LS engine maintenance. Consider this set as a capable companion for routine service and steady performance, rather than a guaranteed outcome. Benefits are presented as possibilities, not guarantees.