Best Ls Valve Cover Adapters for Swaps and PCV Setups

#1 · Best Overall

1. Billet Specialties 95032 Adapters

• Weight: 6 lb
• Material Type: Aluminum
• Material: Aluminum

Best for: SBF Covers On GM LS Motors.

Why it ranks #1: Purpose-built to use SBF valve covers on a GM LS motor, with LS bottom gaskets, SBF top gaskets, and coil relocation specified.

Using small-block Ford valve covers on a GM LS motor is the specific conversion this Billet Specialties adapter set enables. It uses LS gaskets on the bottom and SBF gaskets on top, while 6061-T6 billet aluminum supplies the adapter material and a natural finish.

The two-sided gasket arrangement is central to this conversion: LS gaskets seal the bottom, while SBF gaskets serve the top, helping accommodate the different engine and cover interfaces. Billet Specialties states that coil relocation is required, so buyers can plan that work alongside the cover change. The adapters are made from 6061-T6 billet aluminum and hardware is included. Valve covers and valve-cover gaskets are sold separately, which matters when assembling the complete installation.

Skip it if you want a simple 10AN oil-fill fitting rather than an SBF-cover conversion; Larlansz’s 10AN adapter replaces the factory oil-fill tube.

This set fits builders adapting SBF valve covers to a GM LS motor who can accommodate coil relocation and source covers and gaskets separately. Its gasket-specific arrangement supports the conversion, but it is not a complete valve-cover package.

Listed on Amazon as: Billet Specialties 95032 GM LS Valve Cover Adapters

#2 · Best Coil Relocation

2. CFR Performance Black Coil Adapter Kit

Best for: LS Coil Relocation Builds.

Why it ranks #2: Designed to support ignition coil relocation and mounting on compatible Chevy LS valve covers, with a lightweight aluminum build.

Ignition-coil relocation is the job this CFR Performance adapter kit addresses, giving builders a mounting solution for compatible Chevy LS valve-cover applications. Its aluminum construction keeps the adapter lightweight while supporting daily-driver, engine-swap, and performance-build use, and the black finish suits a dark engine-bay look.

The stated LS valve-cover application makes this kit relevant when relocating ignition coils as part of an engine swap or performance build. Aluminum construction provides a lightweight mounting piece, which supports the product’s stated aim of keeping added weight low while holding up to daily driving. The black finish offers a coordinated appearance in the engine bay. The supplied video guides setup, giving buyers a visual reference during installation; compatibility is specified for compatible Chevy LS valve-cover applications.

Skip it if you need a listed vehicle-by-vehicle compatibility chart; the supplied fitment is limited to compatible Chevy LS valve-cover applications.

This kit suits a builder relocating coils on a compatible Chevy LS valve cover, especially for a swap or performance project where a black finish is preferred. Check the application carefully, since the listing does not name specific engine variants or vehicles.

Listed on Amazon as: CFR Performance Aluminum LS Coil Valve Cover Adapter Kit – Black

#3

3. CFR Performance Polished Coil Adapter Kit

Best for: Polished LS Coil Adapter Kit.

Why it ranks #3: A Chevy LS coil valve cover adapter kit for builders needing coil relocation; the listing identifies its polished finish and CFR part number.

A polished finish is the defining listed detail of this CFR Performance Chevy LS coil valve-cover adapter kit, giving builders a brighter alternative for an LS engine bay. The title identifies it as a coil adapter kit, while the supplied video offers a visual guide to setup and unpacking.

The product title identifies a Chevy LS coil valve-cover adapter kit, making it relevant to a build that calls for this type of adapter. Its polished finish provides the specific appearance distinction stated in the listing. The available product information does not spell out engine variants, materials, or included hardware, so buyers should use the title and setup video as the available reference rather than assume details from another kit. That makes application verification especially important before assembly.

Skip it if you need stated aluminum construction and black finish; CFR Performance’s black HZ-8000-PBK kit lists both details.

This kit may suit a builder seeking a polished Chevy LS coil valve-cover adapter, particularly when finish matters. The supplied facts do not identify engine variants or hardware, so check the application details before committing to an installation.

Listed on Amazon as: CHEVY LS COIL VALVE COVERS ADAPTER KIT – POLISHED

#4 · Best Gen 3/4 Fit

4. Jetuplusllc 10AN Push Fit

• Weight: 1.13 oz

Best for: Gen 3/4 Driver-Side PCV.

Why it ranks #4: Specifically described for Gen 3/4 LS valve covers at the driver-side rear, and includes a black rubber grommet with its 10AN fitting.

A stated Gen 3/4 LS driver-side rear application makes this Jetuplusllc 10AN push-in fitting particularly specific for PCV conversion work. The billet-aluminum adapter is paired with a black rubber grommet, combining the fitting and its grommet in one listed assembly for the described valve-cover position.

The Gen 3/4 LS designation and driver-side rear placement help narrow the application for a PCV-system conversion, rather than leaving buyers to infer a location from a general LS label. Its 10AN push-in format provides the stated hose connection, while the included black rubber grommet supplies the listed mounting component. Billet aluminum is described as corrosion-resistant and rust-proof, supporting use in an engine bay. Buyers should keep the specified generation and side in view when planning installation.

Skip it if you need a general factory-grommet 6AN connection; ICT Billet’s 6AN fitting is listed for factory LS valve-cover grommets.

This fitting suits Gen 3/4 LS owners converting the driver-side rear valve-cover position for a 10AN PCV connection. Its location-specific application is useful for planning, but it is not the broad, unspecified-position choice for every LS cover.

Listed on Amazon as: 10AN Aluminum Push fit Valve Cover Grommet for GM LS Engines – Black

#5 · Best Included Pair

5. GIBACAD 10AN Adapter Pair

• Weight: 1.6 oz
• Material Type: Aluminum
• Material: Aluminum

Best for: Twin 10AN LS Connections.

Why it ranks #5: Supplies two 10AN push-in fittings and two rubber grommets for GM LS engines, offering the most clearly stated multi-piece hose-fitting set.

Two 10AN push-in fittings and two rubber grommets come together in this GIBACAD set, enabling a paired fitting installation on compatible GM LS engines. The fittings use aluminum alloy with a rust-proof surface treatment, while the included grommets provide the listed rubber components for the connection.

The two fittings and two grommets make this a paired set rather than a single-adapter purchase, which can streamline preparing two compatible connection points. GIBACAD lists the 10AN push-in fittings for GM LS engines, giving LS builders a defined application and thread size. Aluminum alloy construction and the rust-proof surface treatment address wear and corrosion, while the stated simple installation can save time during assembly. The package contents are explicitly limited to two fittings and two rubber grommets.

Skip it if you need a single custom PCV fitting in a different size; ICT Billet’s 6AN valve-cover fitting is the listed smaller-size option.

Choose this set when a GM LS installation calls for two 10AN push-in fittings and matching grommets. Its stated compatibility is broad, so buyers with a specific LS generation or vehicle should verify that application before assembly.

Listed on Amazon as: 10AN Aluminum Valve Cover Adapter With Sealing Grommet‌ 2Pcs

#6

6. Larlansz 10AN Oil Cap Adapter

• Weight: 0.04 kg
• Material Type: Aluminum
• Material: Aluminum

Best for: Billet 10AN Oil-Fill Conversion.

Why it ranks #6: Replaces the factory LS oil-fill tube with a 10AN hose connection and includes a silicone O-ring; listed for LS1 through LS7 engines.

Replacing the factory oil-fill tube with a CNC-machined billet adapter gives this Larlansz fitting a specific role on LS valve covers. Its top accepts a 10AN hose end for a custom crankcase evacuation or PCV setup, and the included silicone O-ring is intended to prevent oil seepage at the base.

The replacement oil-fill-tube format preserves a defined installation point on the factory valve cover, while the 10AN hose-end interface supports a custom crankcase evacuation or PCV arrangement. CNC-machined billet aluminum and the black anodized finish provide a finished adapter for that conversion. The silicone O-ring addresses seepage at the base, a practical detail when installing a fitting in the cover. Listed engine coverage includes LS1, LS2, LS3, LS6, and LS7, with specified Camaro, Corvette, Firebird, and GTO applications.

Skip it if you need two adapters for a paired installation; GIBACAD’s 10AN set includes two fittings and two grommets.

This fitting fits buyers converting an LS oil-fill opening to a 10AN hose connection for a custom PCV or crankcase evacuation system. Check the listed engine and vehicle applications, and plan around the single fitting included.

Listed on Amazon as: LS Valve Cover,LS Engine Oil Cap Adapter 10AN Fitting For GM LS LSX LS1 LS2 LS3 LS6 LS7 Billet Aluminum Black

#7

7. Dyno Racing 10AN Oil Cap Fitting

• Weight: 5.44 oz
• Material Type: Aluminum
• Material: Aluminum

Best for: LS 10AN Breather With Filter.

Why it ranks #7: Replaces the original LS oil-fill tube and includes an air filter with its billet aluminum 10AN fitting for listed LS applications.

An included air filter distinguishes this Dyno Racing 10AN valve-cover oil-cap fitting, giving buyers a listed breather accessory alongside the adapter. It replaces the factory oil-fill tube, uses billet aluminum with a silicone O-ring, and names LS1, LS2, LS3, LS6, and LS7 compatibility.

Replacing the original oil-fill tube provides a defined valve-cover installation point, while the -10 AN fitting supports a breather or custom hose connection. The included air filter adds the listed filter accessory to the fitting, so the package covers more than the adapter alone. CNC-machined billet aluminum and a silicone O-ring are specified, with the O-ring intended to help prevent oil seepage at the base. The listing also identifies several LS engines and vehicle applications for fitment review.

Skip it if you need two 10AN push-in fittings and grommets; GIBACAD’s set lists two of each component.

This option suits LS owners replacing the factory oil-fill tube while adding a 10AN breather connection and included air filter. Review the listed engine and vehicle coverage, and note that the package is a single fitting rather than a pair.

Listed on Amazon as: Dyno Racing Aluminum Billet Valve Cover Adapter Oil Cap Breather Fitting AN10 & Filter Accessory Compatible With LX LSX LS1 LS2 LS3 LS6 LS7

#8

8. CNRAQR 10AN Oil Cap Fitting

• Weight: 1.76 oz
• Material Type: Aluminum
• Material: Aluminum

Best for: Black 10AN LS Oil-Cap Fitment.

Why it ranks #8: Offers a 10AN male fitting in aluminum and lists compatibility with LS1, LS2, LS3, LS6, and LS7 engines and several GM vehicles.

A 10AN male top thread, specified as 7/8-14 UNF, defines this CNRAQR oil-cap fitting for LS valve-cover applications. Its lightweight aluminum construction has anti-corrosion and anti-rust properties, and the listed Camaro, Corvette, Firebird, and GTO coverage helps buyers assess vehicle relevance.

The stated 10AN male thread size gives hose-plumbing plans a concrete connection specification, while the listed compatibility spans LS and LSX engines as well as specified Chevrolet and Pontiac models. That combination helps buyers compare both the hose interface and the vehicle application before installation. Aluminum construction is described as lightweight, corrosion-resistant, and rust-resistant, making it suitable for an engine-bay component. The black finish provides a consistent appearance, though the supplied details do not describe included seals or additional hardware.

Skip it if you want a fitting with a listed silicone O-ring; Larlansz’s 10AN adapter explicitly includes one.

This is a fitment-led option for buyers matching a black 10AN oil-cap fitting to the listed LS engines and Chevrolet or Pontiac applications. Its thread specification is clear, but buyers needing a stated seal or hardware package should account for that separately.

Listed on Amazon as: LS Valve Cover Oil Cap 10AN Male Fitting for LSX LS1 LS2 LS3 LS6 LS7

#9 · Best 6AN Option

9. ICT Billet 6AN Grommet Fitting

• Weight: 22.68 g

Best for: Factory-Grommet 6AN PCV Hose.

Why it ranks #9: A purpose-specific 6AN fitting for factory LS valve covers with a rubber PCV grommet, crafted from 6061-T6 billet aluminum.

A 6AN connection for custom PCV vent hoses makes this ICT Billet fitting the smaller-size option among the listed valve-cover adapters. It fits LS covers that use a rubber-grommet PCV fitting, including factory LS valve covers, and is crafted from USA-made billet aluminum in Wichita, Kansas.

Compatibility with factory LS valve-cover grommets gives this fitting a clear mounting context, while its 6AN interface supports custom PCV vent hoses. That pairing helps buyers planning a smaller hose connection avoid mistaking it for a 10AN adapter. The supplied package is one fitting, keeping the component count clear for a single connection. ICT Billet identifies the material as USA-made 6061-T6 billet aluminum and its origin as Wichita, Kansas.

Skip it if you need a 10AN hose connection; Larlansz’s oil-fill adapter is machined to accept a 10AN hose end.

Choose this fitting for an LS valve cover with a factory-style rubber grommet when a custom PCV vent hose uses a 6AN connection. Its one-piece package suits a single point, but the connection size is not 10AN.

Listed on Amazon as: 6AN Fitting for LS Valve Cover Grommet by ICT Billet

#10

10. AugustknowU 10AN Adapter

• Weight: 1.76 oz

Best for: Tool-Free Push-Seal 10AN Adapter.

Why it ranks #10: The listing describes a 10AN grommet replacement, but provides less specific LS engine and vehicle fitment detail than the other options.

Push-to-seal installation with an integrated O-ring is the key feature of this AugustknowU adapter, enabling a stated tool-free connection for -10AN breather hoses. Its black anodized aluminum construction is described as wear-resistant and resistant to deformation, with the listing positioning it as a direct replacement for grommet part 34-010LS.

The push-to-seal design and integrated O-ring are intended to create a tight connection without tools, which can simplify installing a -10AN breather hose. The stated direct-replacement application for grommet part 34-010LS gives buyers a specific reference point for the valve-cover interface. Aluminum with a black anodized finish is described as resisting wear and deformation in engine-bay heat. The supplied dimensions are 1.97 inches on each listed side, providing a size reference for planning.

Skip it if you need a custom PCV vent hose connection in 6AN; ICT Billet’s factory-grommet fitting is listed in that size.

This adapter suits buyers replacing the specified valve-cover grommet and connecting a -10AN breather hose with the listed push-seal method. Check the 34-010LS reference and hose size before installation, since the connection is specifically 10AN.

Listed on Amazon as: Black Anodized Aluminum 10AN Adapter for LS Valve Cover