Aftermarket Car Parts -Private Label Mfg

Precision Works Oil Bypass Check Valve Plug Fits LS1 LS2 LS3

Precision Works Oil Bypass Check Valve Plug Fits LS1 LS2 LS3 - Main image
$13.68 $19 In stock

Category: Motor Vehicle Parts

Precision Works Oil Bypass Check Valve Plug

Our Billet Bypass Delete replaces the factory check valve preventing unfiltered oil from getting into the engine.

The factory bypass check valve is a safety in case the oil filter never gets changed and the filter gets restricted. Most oil filters already have a bypass built into them for this reason. The factory check valve can open with oil pressure surges, letting unfiltered oil by and into the bearings.

Why would you ever let unfiltered oil into your expensive LS engine? Install one of our Bypass Deletes the next time you change your oil filter.

A 1/4-20 threaded hole in the end of our Bypass delete is for easy removal. Just screw a 1/4-20 bolt in and pull the delete out if ever necessary.

Better engine protection from less particles bypassing, replaceable High Temperature Viton O ring and for ease of service a threaded 1/4-20 hole.

Applications:

  • Gen III & IV LS
  • LS1 LS2 LS3 LS4 LS6 LS7 LS9 LQ4 LQ9
  • 4.8L 5.3L 6.0L 6.2L
  • L92 L99
  • Does not work with LSA

Key Features:

  • Billet & Reusable
  • CNC Billet Aluminum
  • Instruction is not included  
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Jason L. ★★★★★

Took a chance on this bypass delete for my LS swap, and the machining on the billet plug is spot-on—threaded in smooth and tight. No more worrying about that factory check valve sending unfiltered oil through the engine.

David ★★★★★

Installed this on my LS3 during an oil change and the machining is perfect—threaded in smoothly with no leaks. Nice peace of mind knowing unfiltered oil isn’t bypassing into the engine.

Jacob ★★★★★

The billet construction feels solid and the threads cut cleanly during installation. Knowing the factory bypass is gone gives me real peace of mind for oil flow.