Pilida 551693 left throttle body bypass plate for LS engines improves coolant routing.
Pilida 551693 right throttle body bypass plate enhances LS engine cooling.
Pilida 551693 billet aluminum kit with O-rings and bolts ensures durable seals.
Pilida 551693 natural finish coolant port covers resist rust in LS engines.
Pilida 551693 installation kit ready for LS engines enables reliable bypass setup.
Pilida 551693 left throttle body bypass plate for LS engines improves coolant routing.
Pilida 551693 right throttle body bypass plate enhances LS engine cooling.
Pilida 551693 billet aluminum kit with O-rings and bolts ensures durable seals.
Pilida 551693 natural finish coolant port covers resist rust in LS engines.
Pilida 551693 installation kit ready for LS engines enables reliable bypass setup.

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)....
Vendor: Pilida
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Pilida 551693 left throttle body bypass plate for LS engines improves coolant routing.

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

£27.88
Pilida 551693 left throttle body bypass plate for LS engines improves coolant routing.
Pilida 551693 right throttle body bypass plate enhances LS engine cooling.
Pilida 551693 billet aluminum kit with O-rings and bolts ensures durable seals.
Pilida 551693 natural finish coolant port covers resist rust in LS engines.
Pilida 551693 installation kit ready for LS engines enables reliable bypass setup.

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

£27.88
Description
Description
x

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.

FAQ

Q: Is this kit compatible with Gen III and Gen IV LS engines?

A: Yes—fits all LS Series engines from 1997 through 2014 (Gen III/IV).

Q: What does the package include and what support is offered?

A: Includes two O-rings, two bolts, and two coolant port covers; 30-day refund and 12-month free replacement.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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