Best LQ4 LQ9 Seal Kits for Peak Engine Protection

Looking for the best LQ4 LQ9 seal kits to keep your engine protected and performing well?
I provide a clear, engaging overview of top-quality seal kits that help your engine stay leak‑free and reliable.

LQ4 and LQ9 engines are powerful and reliable, but they need the right seals to keep running strong. Leaking oil or coolant can cause big problems. The best LQ4 LQ9 seal kits fix these issues and keep your engine in top shape.

These kits are easy to install and built to last. They give you peace of mind and save money on repairs. Let’s explore the top options to keep your engine running smoothly.

List of Top 10 LQ4 LQ9 Seal Kits

Image Title Best For Price
GEN 3 III New LS Gasket Set Kit and LS9 Head Gaskets Compatible with Chevy GMC Vehicle Silverado Sierra LS1 LS6 LQ4 LQ9 4.8L 5.3L 5.7L 6.0L LS Engine Gasket Kit, Replace#12551933 12558178 12611384 GEN 3 III New LS Gasket Set Kit and LS9 Head Gaskets Compatible with Chevy GMC Vehicle Silverado Sierra LS1 LS6 LQ4 LQ9 4.8L 5.3L 5.7L 6.0L LS Engine Gasket Kit, Replace#12551933 12558178 12611384

This product is perfect for LS engine owners who want a simple, complete, and ready-to-install gasket kit. It’s great for anyone who wants strong parts that fit right and keep the engine sealed tight.

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Michigan Motorsports LS Front Timing Cover Gasket Kit - Fits LS1 LS2 LS3 LS6 LQ9 LQ4 4.8L 5.3L 5.7L 6.0L 6.2L Applications - Complete Front Timing Cover Gasket Kit Michigan Motorsports LS Front Timing Cover Gasket Kit – Fits LS1 LS2 LS3 LS6 LQ9 LQ4 4.8L 5.3L 5.7L 6.0L 6.2L Applications – Complete Front Timing Cover Gasket Kit

This kit is perfect for DIY mechanics. It helps you fix oil leaks fast. It fits LS engines and is easy to use. Use it for a clean build.

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BTSCAR LS Gasket Set Kit LS9 Head Gaskets Fits for LS1/LS6/LQ4/LQ9 4.8 5.3 5.7 6.0L 6.2 GEN Ⅳ BTSCAR LS Gasket Set Kit LS9 Head Gaskets Fits for LS1/LS6/LQ4/LQ9 4.8 5.3 5.7 6.0L 6.2 GEN Ⅳ

This is perfect for LS engine builders and car repair pros who need a full gasket kit for a clean, tight seal. It is also a smart pick for DIY mechanics who want a simple fit and strong parts for LS1, LS6, LQ4, LQ9, and more.

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GoaMotors Rear Main Seal Set Oring Gasket Crankshaft Seal Fit for Chevrolet for GMC for Hummer for Pontiac LS LSX LS1 LQ4 LQ9 LS2 LS3 LS7 4.8L 5.3L 5.7L 6.0L, Replace BS40640 GoaMotors Rear Main Seal Set Oring Gasket Crankshaft Seal Fit for Chevrolet for GMC for Hummer for Pontiac LS LSX LS1 LQ4 LQ9 LS2 LS3 LS7 4.8L 5.3L 5.7L 6.0L, Replace BS40640

This GoaMotors Rear Main Seal Set is perfect for car owners who need a reliable replacement for their Chevrolet, GMC, Hummer, Pontiac, Saab, or Isuzu with 4.8L, 5.3L, 5.7L, or 6.0L engines. It’s ideal for preventing oil leaks and keeping your engine running smoothly.

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LS 6.0L Engine Re-Ring Rebuild Kit w/Full Gasket Set + Premium Piston Rings + Main & Rod Bearings – 2001–2005 Chevy LQ4 LQ9 6.0 LS Truck Engine Overhaul Kit LS 6.0L Engine Re-Ring Rebuild Kit w/Full Gasket Set + Premium Piston Rings + Main & Rod Bearings – 2001–2005 Chevy LQ4 LQ9 6.0 LS Truck Engine Overhaul Kit

This engine rebuild kit is perfect for truck owners with worn 6.0L LS engines. It’s ideal for fixing oil burning and blow-by issues, saving you money on repairs.

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Michigan Motorsports LS Rear Cover Gasket & Rear Main Crank Seal Kit | Replaces GM 89060436 & 12633578 | Fits4.8L 5.3L 5.7L 6.0L 6.2L LS Engines | LS1 LS2 LS3 LQ4 LQ9 L92 L94 L76 L77 LY6 L96 Michigan Motorsports LS Rear Cover Gasket & Rear Main Crank Seal Kit | Replaces GM 89060436 & 12633578 | Fits4.8L 5.3L 5.7L 6.0L 6.2L LS Engines | LS1 LS2 LS3 LQ4 LQ9 L92 L94 L76 L77 LY6 L96

This kit is perfect for anyone who wants a clean, tight seal on their LS engine. It works great for people doing a rebuild, a swap, or a simple leak fix.

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Assembroverse GEN3 LS Gasket Set Compatible with LS1 LQ4 LS6 LQ9 1999-2010 Engine, 4.8L 5.3L 5.7L 6.0L, Replace BTR73450 12633904, Premium Sealing Assembroverse GEN3 LS Gasket Set Compatible with LS1 LQ4 LS6 LQ9 1999-2010 Engine, 4.8L 5.3L 5.7L 6.0L, Replace BTR73450 12633904, Premium Sealing

This is perfect for LS engine owners who want strong seals and smooth, long-lasting engine performance. It’s great for anyone who needs a reliable gasket set that stops leaks fast.

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SUSUCAR LS9 Head Gasket Kit LS Full Gasket Set with Oil Pan Gen 4 Ⅳ Valley Cover Gasket for LS1 LS6 LQ4 LQ9 4.8L 5.3L 5.7L 6.0L SUSUCAR LS9 Head Gasket Kit LS Full Gasket Set with Oil Pan Gen 4 Ⅳ Valley Cover Gasket for LS1 LS6 LQ4 LQ9 4.8L 5.3L 5.7L 6.0L

This kit is perfect for LS engine owners who want a simple, strong, and reliable fix. It suits anyone who needs a full, durable gasket set that fits many LS models with ease.

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RULLINE LS Gasket Set Kit and LS9 Head Gaskets Compatible with LS1 LS6 LQ4 LQ9 GEN III 4.8L 5.3L 5.7L 6.0L for Chevy Silverado GMC Sierra 1500 2500 3500 1999-2010 Replace 12622033 12585673 RULLINE LS Gasket Set Kit and LS9 Head Gaskets Compatible with LS1 LS6 LQ4 LQ9 GEN III 4.8L 5.3L 5.7L 6.0L for Chevy Silverado GMC Sierra 1500 2500 3500 1999-2010 Replace 12622033 12585673

This is perfect for GM truck and van owners who need a reliable LS gasket kit for 4.8L, 5.3L, 5.7L, or 6.0L engines. It is also a smart pick for professional mechanics who want a clean fit and strong seal.

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Rear Main Seal Kit BS40640 Compatible with Chevy Hummer GMC Pontiac LS LS1 LS2 LS3 LS7 LQ4 LQ9 LSX 4.8L 5.3L 5.7L 6.0L Oring Gasket Crankshaft Seal Metal Gasket Set Rear Main Seal Kit BS40640 Compatible with Chevy Hummer GMC Pontiac LS LS1 LS2 LS3 LS7 LQ4 LQ9 LSX 4.8L 5.3L 5.7L 6.0L Oring Gasket Crankshaft Seal Metal Gasket Set

This Rear Main Seal Kit is perfect for car owners who want to stop oil leaks quickly. It is easy to install and fits many Chevy, Hummer, GMC, and Pontiac models.

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Detailed Reviews

These LQ4 LQ9 Seal Kits are top picks for engine care.
They fit many models with ease and add strong protection.
Each kit delivers a tight seal that lasts in harmony.
Read more to find the best match for your engine.

1. GEN 3 III New LS Gasket Set Kit and LS9 Head Gaskets Compatible with Chevy GMC Vehicle Silverado Sierra LS1 LS6 LQ4 LQ9 4.8L 5.3L 5.7L 6.0L LS Engine Gasket Kit, Replace#12551933 12558178 12611384

GEN 3 III New LS Gasket Set Kit and LS9 Head Gaskets Compatible with Chevy GMC Vehicle Silverado Sierra LS1 LS6 LQ4 LQ9 4.8L 5.3L 5.7L 6.0L LS Engine Gasket Kit, Replace#12551933 12558178 12611384

The GEN 3 III LS Gasket Set Kit gives your engine a clean, tight seal. Every part fits well and works with many Chevy and GMC LS engines.
It uses strong materials that last a long time. You get solid performance with every install.

This kit matches many OE numbers and fits LS1, LS6, LQ4, LQ9, and more. The set includes key gaskets, seals, and LS9 head gaskets for a full refresh.

The fit is exact. The build is strong. The value is clear.

Pros Cons
  • Fits many Chevy and GMC LS engines perfectly.
  • Replaces many old parts with ease.
  • Includes all the best gaskets you need.
  • Top quality parts built to last long.
  • Easy to use and saves you time.
  • No intake manifold gaskets included in the kit.
  • Compatibility check required before purchase to avoid mistakes.
  • Does not fit all engines, verify your vehicle’s specs first.

Perfect For:

This product is perfect for LS engine owners who want a simple, complete, and ready-to-install gasket kit. It’s great for anyone who wants strong parts that fit right and keep the engine sealed tight.

Ready to Purchase?

2. Michigan Motorsports LS Front Timing Cover Gasket Kit – Fits LS1 LS2 LS3 LS6 LQ9 LQ4 4.8L 5.3L 5.7L 6.0L 6.2L Applications – Complete Front Timing Cover Gasket Kit

Michigan Motorsports LS Front Timing Cover Gasket Kit - Fits LS1 LS2 LS3 LS6 LQ9 LQ4 4.8L 5.3L 5.7L 6.0L 6.2L Applications - Complete Front Timing Cover Gasket Kit

This complete kit has all gaskets for cam install. It fits many LS engines like LS1 and LS3. You get a leak-free seal every time.

The parts match OEM specs for a perfect fit. It is great for cam swaps and engine rebuilds. The strong materials resist heat and oil.

Install with ease and drive with confidence. Get your kit today.

Pros Cons
  • Complete kit ensures leak-free camshaft installation with all essential gaskets.
  • Fits multiple LS engines, perfect for stock or performance builds.
  • Precision design meets OEM standards for durable sealing.
  • High-quality materials resist heat, wear, and oil for long-lasting performance.
  • No tools included, so you’ll need your own.
  • Not for non-LS engines, limiting compatibility.
  • No instructions, requires prior knowledge for installation.

Perfect For:

This kit is perfect for DIY mechanics. It helps you fix oil leaks fast. It fits LS engines and is easy to use. Use it for a clean build.

Ready to Purchase?

3. BTSCAR LS Gasket Set Kit LS9 Head Gaskets Fits for LS1/LS6/LQ4/LQ9 4.8 5.3 5.7 6.0L 6.2 GEN Ⅳ

BTSCAR LS Gasket Set Kit LS9 Head Gaskets Fits for LS1/LS6/LQ4/LQ9 4.8 5.3 5.7 6.0L 6.2 GEN Ⅳ

This LS gasket kit fits many engines. It works for LS1 and LS6 models. It fits 4.8L to 6.2L sizes.

The set uses high quality materials. These parts are strong and durable. They meet OE standards for fit.

The complete package has all seals. You get a one year warranty.

Pros Cons
  • Fits multiple engines, ensuring wide compatibility for your vehicle.
  • OEM precision guarantees easy installation with no modifications needed.
  • Durable materials promise long-lasting performance and reliability.
  • Comprehensive kit includes all essential gaskets for complete repairs.
  • One-year warranty offers peace of mind with after-sales support.
  • May not fit all custom builds
  • Large kit can feel hard to sort
  • No tools included for install

Perfect For:

This is perfect for LS engine builders and car repair pros who need a full gasket kit for a clean, tight seal. It is also a smart pick for DIY mechanics who want a simple fit and strong parts for LS1, LS6, LQ4, LQ9, and more.

Ready to Purchase?

4. GoaMotors Rear Main Seal Set Oring Gasket Crankshaft Seal Fit for Chevrolet for GMC for Hummer for Pontiac LS LSX LS1 LQ4 LQ9 LS2 LS3 LS7 4.8L 5.3L 5.7L 6.0L, Replace BS40640

GoaMotors Rear Main Seal Set Oring Gasket Crankshaft Seal Fit for Chevrolet for GMC for Hummer for Pontiac LS LSX LS1 LQ4 LQ9 LS2 LS3 LS7 4.8L 5.3L 5.7L 6.0L, Replace BS40640

The GoaMotors Rear Main Seal Set is a perfect fit for Chevrolet, GMC, Hummer, and Pontiac vehicles. It works with LS and LSX engines, including 4.8L, 5.3L, 5.7L, and 6.0L models. This gasket stops motor oil leaks around the crankshaft.

It replaces part number BS40640 and fits other brands like Saab and Isuzu. Check the compatibility chart before buying to ensure it’s right for your vehicle.

Pros Cons
  • Prevents oil leaks, keeping your engine clean and efficient.
  • Fits multiple brands, perfect for Chevrolet, GMC, Hummer, and more.
  • Replaces BS40640, a direct and reliable upgrade for your vehicle.
  • Easy to install, saves time and hassle during maintenance.
  • May not fit all engine setups
  • Needs care to install right
  • Not ideal if you want a full kit

Perfect For:

This GoaMotors Rear Main Seal Set is perfect for car owners who need a reliable replacement for their Chevrolet, GMC, Hummer, Pontiac, Saab, or Isuzu with 4.8L, 5.3L, 5.7L, or 6.0L engines. It’s ideal for preventing oil leaks and keeping your engine running smoothly.

Ready to Purchase?

5. LS 6.0L Engine Re-Ring Rebuild Kit w/Full Gasket Set + Premium Piston Rings + Main & Rod Bearings – 2001–2005 Chevy LQ4 LQ9 6.0 LS Truck Engine Overhaul Kit

LS 6.0L Engine Re-Ring Rebuild Kit w/Full Gasket Set + Premium Piston Rings + Main & Rod Bearings – 2001–2005 Chevy LQ4 LQ9 6.0 LS Truck Engine Overhaul Kit

Revive your worn-out 6.0L LS truck engine with this complete re-ring rebuild kit. It includes premium piston rings, main and rod bearings, and a full gasket set with MLS head gaskets.

This kit fixes oil burning and blow-by issues, ideal for high-mileage engines. Fits LQ4 and LQ9 engines in GM trucks, SUVs, and LS swaps. Quality parts, no cheap substitutes.

Pros Cons
  • High‑quality parts built to last
  • Helps cut oil burn and blow‑by
  • Fits LQ4/LQ9 engines with ease
  • Great for high‑mile engine refresh
  • Many size options for a perfect fit
  • Size choice can be confusing after order.
  • No full engine parts for a complete rebuild.
  • Fit check is still needed before use.

Perfect For:

This engine rebuild kit is perfect for truck owners with worn 6.0L LS engines. It’s ideal for fixing oil burning and blow-by issues, saving you money on repairs.

Ready to Purchase?

6. Michigan Motorsports LS Rear Cover Gasket & Rear Main Crank Seal Kit | Replaces GM 89060436 & 12633578 | Fits4.8L 5.3L 5.7L 6.0L 6.2L LS Engines | LS1 LS2 LS3 LQ4 LQ9 L92 L94 L76 L77 LY6 L96

Michigan Motorsports LS Rear Cover Gasket & Rear Main Crank Seal Kit | Replaces GM 89060436 & 12633578 | Fits4.8L 5.3L 5.7L 6.0L 6.2L LS Engines | LS1 LS2 LS3 LQ4 LQ9 L92 L94 L76 L77 LY6 L96

The Michigan Motorsports rear cover kit gives your LS engine a clean, tight seal. It fits many 4.8–6.2L LS engines with an easy, direct fit.

You get a full gasket and seal set made to stop leaks. The parts use strong, oil-safe materials that hold up over time.

It works for swaps. It works for rebuilds. It works for worn engines.

Pros Cons
  • Easy fit for many LS engines
  • Strong seal that stops leaks
  • Lasts long under heat and oil
  • Great for rebuilds and swaps
  • Reliable OE-style quality
  • May need pro install for best seal
  • Not ideal if you want a full engine kit
  • Fit issues possible on worn or damaged covers

Perfect For:

This kit is perfect for anyone who wants a clean, tight seal on their LS engine. It works great for people doing a rebuild, a swap, or a simple leak fix.

Ready to Purchase?

7. Assembroverse GEN3 LS Gasket Set Compatible with LS1 LQ4 LS6 LQ9 1999-2010 Engine, 4.8L 5.3L 5.7L 6.0L, Replace BTR73450 12633904, Premium Sealing

Assembroverse GEN3 LS Gasket Set Compatible with LS1 LQ4 LS6 LQ9 1999-2010 Engine, 4.8L 5.3L 5.7L 6.0L, Replace BTR73450 12633904, Premium Sealing

Stop oil leaks with a perfect seal. This gasket set works hard to keep your engine dry and clean.

It fits many LS engines from 1999 to 2010. Use it for 4.8L, 5.3L, 5.7L, and 6.0L models. It replaces parts BTR73450, 12633904, and more.

It works with Chevy Silverado and GMC Sierra trucks. It also fits Express vans. Every set is tested for top quality.

Pros Cons
  • Stops leaks with strong, tight sealing
  • Fits many engines for easy use
  • Cuts wear and keeps parts safe
  • Built to last with strict quality tests
  • Smooths surfaces for better long-term work
  • May not fit all aftermarket cylinder heads.
  • Lacks a paper manual for installation guidance.
  • Rubber seals may feel stiff in cold weather.

Perfect For:

This is perfect for LS engine owners who want strong seals and smooth, long-lasting engine performance. It’s great for anyone who needs a reliable gasket set that stops leaks fast.

Ready to Purchase?

8. SUSUCAR LS9 Head Gasket Kit LS Full Gasket Set with Oil Pan Gen 4 Ⅳ Valley Cover Gasket for LS1 LS6 LQ4 LQ9 4.8L 5.3L 5.7L 6.0L

SUSUCAR LS9 Head Gasket Kit LS Full Gasket Set with Oil Pan Gen 4 Ⅳ Valley Cover Gasket for LS1 LS6 LQ4 LQ9 4.8L 5.3L 5.7L 6.0L

SUSUCAR LS9 Head Gasket Kit is made for many LS engines. It helps give a tight seal and a strong fit.

It includes many key gaskets and seals. It is made with MLS parts for good use. It is built to last.

This kit is durable and made for reliable service. It helps support a clean, secure engine build. It is a smart choice for repair work.

Pros Cons
  • Fits many LS engines with ease
  • Strong build for long life
  • Full kit covers key engine seals
  • Reliable parts for smooth work
  • Easy setup for quick installs
  • May not fit all custom builds
  • Large kit can feel hard to sort
  • No tools included for install

Perfect For:

This kit is perfect for LS engine owners who want a simple, strong, and reliable fix. It suits anyone who needs a full, durable gasket set that fits many LS models with ease.

Ready to Purchase?

9. RULLINE LS Gasket Set Kit and LS9 Head Gaskets Compatible with LS1 LS6 LQ4 LQ9 GEN III 4.8L 5.3L 5.7L 6.0L for Chevy Silverado GMC Sierra 1500 2500 3500 1999-2010 Replace 12622033 12585673

RULLINE LS Gasket Set Kit and LS9 Head Gaskets Compatible with LS1 LS6 LQ4 LQ9 GEN III 4.8L 5.3L 5.7L 6.0L for Chevy Silverado GMC Sierra 1500 2500 3500 1999-2010 Replace 12622033 12585673

The RULLINE LS Gasket Set Kit is perfect for Chevy and GMC trucks from 1999 to 2010. It works with LS engines like the LS1, LS6, LQ4, and LQ9, fitting 4.8L to 6.0L sizes.

This kit seals oil, coolant, and gas well, keeping your engine running smoothly. Professional installation is best, and checking part numbers ensures a perfect fit.

Pros Cons
  • Wide fit for many LS engines.
  • Strong seal helps stop leaks.
  • OE numbers support a good match.
  • Built for durable engine use.
  • Fits many Chevy and GMC trucks.
  • No installation instructions included, requiring professional help.
  • Not compatible with intake manifold gaskets.
  • Limited to specific Chevy and GMC models (1999-2010).

Perfect For:

This is perfect for GM truck and van owners who need a reliable LS gasket kit for 4.8L, 5.3L, 5.7L, or 6.0L engines. It is also a smart pick for professional mechanics who want a clean fit and strong seal.

Ready to Purchase?

10. Rear Main Seal Kit BS40640 Compatible with Chevy Hummer GMC Pontiac LS LS1 LS2 LS3 LS7 LQ4 LQ9 LSX 4.8L 5.3L 5.7L 6.0L Oring Gasket Crankshaft Seal Metal Gasket Set

Rear Main Seal Kit BS40640 Compatible with Chevy Hummer GMC Pontiac LS LS1 LS2 LS3 LS7 LQ4 LQ9 LSX 4.8L 5.3L 5.7L 6.0L Oring Gasket Crankshaft Seal Metal Gasket Set

The Rear Main Seal Kit BS40640 gives your engine a tight, clean seal. It helps stop leaks fast.

It fits many Chevy, GMC, Hummer, and Pontiac engines. It keeps oil where it should stay. It helps your engine run strong.

The kit blocks leaks that harm key parts. It handles heat and pressure with ease. It installs fast with no special tools.

Pros Cons
  • Fits many engines with wide model support
  • Stops leaks and keeps oil where it should stay
  • Boosts seal strength for better engine health
  • Handles heat and tough use with ease
  • Quick install with no special tools needed
  • Not universal: Check compatibility before buying to avoid wrong fit.
  • No tools included: Simple install, but you need your own tools.
  • Trimming needed: Metal-free gasket may require customization for perfect fit.

Perfect For:

This Rear Main Seal Kit is perfect for car owners who want to stop oil leaks quickly. It is easy to install and fits many Chevy, Hummer, GMC, and Pontiac models.

Ready to Purchase?

Buying Guide

Good seal kits stop leaks fast. They also keep your engine safe.
You feel calm when your engine stays dry. You enjoy every drive with no stress.

  • Fit: Make sure the kit fits your LQ4 or LQ9 engine. Check the size and match the part numbers. A good fit stops leaks right away.

  • Material: Pick strong materials that handle heat and pressure. Good gaskets stay tight for a long time. They keep oil and coolant in place.

  • Parts Included: Look for a full kit with all seals you need. This saves time and money. You avoid buying extra parts later.

  • Build Quality: Choose kits made with high quality parts. They last longer and work better. Your engine stays clean and dry.

  • Ease of Install: Pick a kit that is easy to install. Clear parts make the job simple. You get a tight seal with less work.

  • Brand Trust: Go with trusted brands known for strong seals. Good brands test their parts well. You get better results and fewer leaks.

  • Warranty: A warranty gives peace of mind. It shows the maker trusts the kit. You feel safe using it.

  • Use Case: Think about how you use your engine. Hard use needs stronger seals. Light use may need only a basic kit.

  • Price: Pick a kit that fits your budget. A fair price still gives good value. You get strong parts without overspending.