We researched and compared the top LBZ head gasket kits available on Amazon. Our evaluation is based on manufacturer specifications, published industry standards (SAE, ASTM), and aggregated owner feedback from forums and verified purchasers. Each kit was assessed for gasket material, bolt quality, included components, and real-world reliability reports.
This guide covers seven products that vary in composition and scope. We highlight strengths and honest limitations to help you choose the kit that matches your rebuild goals and budget.
| Photo | Product | Score | Buy |
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Mahle Original 63265 Head Gasket Set Best Overall Includes MLS head gaskets, valve stem seals, and all necessary gaskets for LBZ Duramax |
9.0 | 🛒 Check Price |
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Fel-Pro ES 72710 Engine Head Gasket Set Top Runner Up PermaDryPlus gaskets, blue silicone valve cover gaskets, includes exhaust manifold gaskets |
8.7 | 🛒 Check Price |
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ATP Automotive ZA-55 Engine Head Gasket Set Best Value Includes cylinder head gaskets, intake/exhaust gaskets, and valve cover gaskets |
8.4 | 🛒 Check Price |
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Hastings P-1021 Head Gasket Set Solid Performer Premium graphite composite gaskets, includes valve stem seals and manifold gaskets |
8.1 | 🛒 Check Price |
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Victor Reinz 02-36926-01 Head Gasket Set OEM Alternative Includes MLS head gaskets, intake/exhaust gaskets, and valve cover gaskets |
7.8 | 🛒 Check Price |
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Diesel Power Products Head Gasket Set Performance Pick Includes MLS head gaskets, copper spray, and all necessary gaskets for LBZ |
7.3 | 🛒 Check Price |
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Melling Gasket Set MGS-201 Budget Option Graphite composite gaskets, includes valve cover and intake gaskets |
7.0 | 🛒 Check Price |
1. Mahle Original 63265 Head Gasket Set: Best Overall
In our evaluation, the Mahle Original 63265 head gasket set stands out for its comprehensive coverage and OEM-quality materials. The multi-layer steel gaskets are designed to withstand the high cylinder pressures of modified LBZ engines, and owner feedback consistently reports long service life without failure. The kit includes virtually every gasket needed for a top-end rebuild, which simplifies ordering and reduces the chance of missing critical parts.
However, this kit does not include head bolts or studs, so you will need to purchase those separately. It is not the most budget-friendly option, and for stock or lightly modified engines, a less expensive kit may suffice. Skip this if you want a one-box solution with hardware or if you are on a tight budget.
- Multi-layer steel (MLS) head gaskets for superior sealing and heat resistance
- Complete set includes intake/exhaust manifold gaskets, valve cover gaskets, and more
- OEM-grade materials meet or exceed GM specifications
Pros: Proven reliability in high-horsepower builds; Comprehensive kit reduces need for additional purchases
Cons: Does not include head bolts or studs
2. Fel-Pro ES 72710 Engine Head Gasket Set: Top Runner Up
We compared the Fel-Pro ES 72710 set and found it to be a strong all-around choice for LBZ rebuilds. The PermaDryPlus material is known for conforming to minor surface irregularities, reducing leak paths. Owner reviews highlight easy installation and a good fit. The set covers the major gaskets needed, including the often-overlooked EGR cooler gaskets.
On the downside, a few owners have noted that the head gaskets can vary slightly in thickness, which may require checking deck clearance on modified engines. It also does not include head bolts. This kit is ideal for stock to mildly tuned LBZ engines where OEM-level sealing is desired without paying a premium. Skip if you need a full bolt-included set or are building a high-horsepower engine.
- PermaDryPlus gaskets provide excellent fluid sealing
- Includes valve stem seals and intake manifold gaskets
- Blue silicone valve cover gaskets resist oil leakage
Pros: Excellent sealing reputation across multiple engine platforms; Competitive price for the completeness of the set
Cons: Some users report head gasket thickness variation requiring careful measurement
3. ATP Automotive ZA-55 Engine Head Gasket Set: Best Value
Our evaluation of the ATP ZA-55 shows it offers solid value for LBZ owners on a budget. The graphite composite head gaskets seal well initially and are forgiving on surface finish. The kit includes the essential gaskets for a head gasket replacement, and many users report successful installations on stock trucks.
However, the graphite material is not recommended for tuned engines or heavy towing applications, as it can fail under sustained high cylinder pressure. Additionally, the kit lacks some secondary gaskets like the EGR cooler gasket. Skip this if you plan to increase power or want a long-term solution for a daily driver that sees severe duty.
- Affordable alternative for basic LBZ head gasket replacement
- Includes graphite composite head gaskets for good initial sealing
- Covers most gaskets needed for a head gasket job
Pros: Very budget-friendly compared to OEM-level kits; Suitable for stock engines with low boost levels
Cons: Graphite gaskets are less durable than MLS under high heat and boost
4. Hastings P-1021 Head Gasket Set: Solid Performer
The Hastings P-1021 set we reviewed offers a middle ground between budget graphite kits and premium MLS sets. The graphite composite with a steel core provides better resistance to blowout than plain graphite. Owner feedback indicates reliable sealing in stock and mildly modified engines.
Still, for heavy towing or high-performance builds, we recommend stepping up to a full MLS kit. The set also does not include head bolts, and some users noted the valve cover gaskets can be a bit stiff. This kit is best for a stock LBZ rebuild where you want a trusted brand without overspending. Skip it if you plan to tune the engine or need a complete hardware kit.
- Graphite composite with steel core for improved strength
- Includes detailed installation instructions
- Compatible with LBZ engine code
Pros: Good sealing track record in stock applications; Instructions are helpful for first-time rebuilders
Cons: Not as durable as MLS under extreme heat cycles
5. Victor Reinz 02-36926-01 Head Gasket Set: OEM Alternative
In our comparison, the Victor Reinz 02-36926-01 set provides MLS head gaskets at a price point below Mahle and Fel-Pro. That makes it an attractive OEM alternative. The gaskets themselves are well-made, and the set includes most of what you need for a head gasket job. Owner reviews generally praise the sealing performance.
However, we found occasional reports of missing gaskets (like the EGR cooler gasket), which can cause delays. Also, the set does not include head bolts. This kit is suitable for budget-conscious builders who want MLS gaskets and are willing to source a few extra gaskets separately. Skip it if you want a complete, hassle-free set with all components included.
- MLS head gaskets for durability
- German engineering with strict quality control
- Covers all critical gaskets for head removal
Pros: MLS construction at a competitive price; Good fit and finish reported by users
Cons: Some kits have been reported missing gaskets for EGR cooler
6. Diesel Power Products Head Gasket Set: Performance Pick
We evaluated the Diesel Power Products head gasket set and found it aimed squarely at the performance crowd. The MLS gaskets are thick and designed to handle high cylinder pressure. The inclusion of copper spray is a nice touch for those who want extra insurance on less-than-perfect surfaces.
However, for most stock or mildly modified LBZ engines, the copper spray is unnecessary and adds cost. The set also lacks head bolts. Owner feedback is mixed, with some reporting excellent sealing and others noting the gaskets are thicker than OEM, requiring head bolt length verification. This kit is best for high-horsepower builds where maximum sealing is critical. Skip it if you have a stock truck or want a simple, complete kit.
- MLS head gaskets designed for high boost applications
- Includes copper gasket spray for added sealing
- Targeted at performance enthusiasts
Pros: Copper spray can help with surface imperfections; Good for engines with aftermarket turbos
Cons: Copper spray not needed for most builds; Price is higher than comparable sets without added value
7. Melling Gasket Set MGS-201: Budget Option
The Melling MGS-201 set is the most budget-friendly option we reviewed. It covers the basic gaskets needed for a head gasket job, and the price is hard to beat. For a stock LBZ that sees light duty, it may seal adequately.
However, the graphite composite gaskets are not recommended for any engine that sees boost or heavy towing. Fitment issues have been reported, with some gaskets requiring trimming. The set also lacks exhaust manifold gaskets and head bolts. This kit is only suitable for a low-budget, low-stress rebuild where you are prepared to replace gaskets again if needed. Skip it for any serious or long-term repair.
- Economical choice for basic head gasket replacement
- Includes valve stem seals and manifold gaskets
- Lightweight packaging reduces shipping cost
Pros: Lowest price among reviewed kits; Adequate for emergency repairs
Cons: Graphite gaskets prone to failure under boost; Some gaskets may not fit perfectly
Frequently Asked Questions
What is included in a typical LBZ head gasket kit?
A typical LBZ head gasket kit includes cylinder head gaskets, intake manifold gaskets, exhaust manifold gaskets, valve cover gaskets, valve stem seals, and sometimes EGR cooler gaskets. Most kits do not include head bolts or studs, which must be purchased separately. Always check the kit contents against your specific rebuild needs.
Should I use MLS or graphite head gaskets for my LBZ?
Multi-layer steel (MLS) gaskets are recommended for any LBZ engine that is modified, tuned, or used for heavy towing. They withstand higher cylinder pressures and thermal cycling better than graphite composite gaskets. Graphite gaskets can be adequate for stock, low-stress engines but are more prone to failure under boost. For longevity, MLS is the safer choice.
Do I need to replace head bolts when doing a head gasket?
Yes, GM specifies that the LBZ head bolts are torque-to-yield and should not be reused. Always install new head bolts or upgrade to head studs for improved clamping force, especially in high-performance builds. Most head gasket kits do not include bolts, so plan to order them separately.
How do I know if a head gasket kit fits my LBZ engine?
Check the product description for compatibility with the 2006-2007 GM Duramax LBZ engine. Also verify the engine code on your vehicle’s VIN. Most kits listed as for LBZ will fit, but always confirm the part number against OEM specifications or consult the manufacturer’s fitment guide.
Can I install a head gasket kit myself?
Installing a head gasket on an LBZ is a complex job that requires mechanical experience, proper tools (torque wrench, thread chaser, etc.), and attention to detail. The cylinder head surface must be clean and flat. If you are not confident, professional installation is recommended to avoid costly mistakes.
Our Verdict
After researching and comparing these seven LBZ head gasket kits, our top pick is the Mahle Original 63265 for its comprehensive coverage and proven MLS gasket durability. The runner up is the Fel-Pro ES 72710, which offers excellent sealing at a slightly lower price point. For budget builds, the ATP ZA-55 provides acceptable performance for stock engines, but we advise investing in a full MLS kit for any modified or heavily used truck.
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