1. Motorcycle Cylinder Heads & Valve Covers For Sale
  2. sku: 13674675127796604
  3. BFO S3J4G5

BFO S3J4G5 Cylinder Head Gasket Kit Engines 70CC 50CC

fits model: Crf70, Xr70, Ct70, C70. make: Honda.

S3j4g5 Bfo Cylinder Head With Gasket Kit For Honda Crf70 Xr70 Ct70 C70 70cc 50cc Engines

( Brand: Bfo ), ( Manufacturer Part Number: S3J4G5 ), ( Bundle Listing: Yes ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Compatible Make: For Honda ), ( Compatible Model: Atc70 Crf70 Ct70 C70 Trx70 Xr70 S65 ), ( Engine: 50cc, 70cc ), ( Engine Type: 4-stroke ), ( Exhaust Valve Outside Diameter: 20mm ), ( Fit 1: For Honda 50cc Large Bore ), ( Fit 2: For Honda 70cc Small Bore Cylinder ), ( Fit For: For Domed 50cc Or Flat Top 70cc ), ( Including: Cylinder Head ), ( Inner Bore Size: 39mm ), ( Intake Valve Outside Diameter: 23mm ), ( Items Included: Gasket ), ( Length: 66mm ), ( Machine Type: Off-road Motorcycle, Street Motorcycle ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Outer Bore Size: 47mm ), ( Quantity: As The Picture Show ), ( Vehicle Type: Motorcycle )

Review BFO Cylinder Head Gasket Kit Honda 70cc 50cc Engines fits CRF70 XR70 CT70 C70

The BFO S3J4G5 cylinder head gasket kit is specifically designed for Honda CRF70, XR70, CT70, and C70 engines with 70cc and 50cc displacements. This gasket kit is an essential component for maintaining the sealing integrity between the cylinder head and engine block.

The BFO S3J4G5 gasket kit consists of multiple high-quality gaskets that are meticulously engineered to provide a perfect seal. Each gasket is made from a specialized material that offers superior thermal conductivity, durability, and resistance to warping and deformation. This ensures that the engine runs efficiently and effectively, without the risk of coolant or oil leaks.

The kit includes not only the cylinder head gasket but also other essential gaskets such as the oil cooler gasket, water pump gasket, and timing cover gasket. Each gasket is pre-cut to ensure a precise fit, minimizing the need for modifications or customization.

Installing the gaskets is a straightforward process, thanks to the detailed instructions provided with the kit. The gaskets are also designed to be compatible with OEM sealing surfaces, meaning that no additional surface preparation is required.

Using the BFO S3J4G5 cylinder head gasket kit offers several benefits. It provides improved sealing, reducing the risk of costly engine repairs and downtime. It also enhances engine performance by ensuring proper compression and cooling system function. Additionally, the high-quality materials used in the gaskets ensure a longer service life, reducing the need for frequent replacements.

In summary, the BFO S3J4G5 cylinder head gasket kit is an essential upgrade for any Honda CRF70, XR70, CT70, or C70 engine with a 70cc or 50cc displacement. With its high-quality gaskets, easy installation process, and long-lasting durability, this kit is an investment in the longevity and performance of your engine.

Pros and Cons of Buying a BFO S3J4G5 Cylinder Head Gasket Kit for Honda CRF70, XR70, CT70, C70 70cc and 50cc Engines

Introduction:

The BFO S3J4G5 cylinder head gasket kit is a popular replacement option for Honda CRF70, XR70, CT70, C70 engines with 70cc and 50cc capacities. This gasket kit is designed to address common head gasket issues and provide a reliable seal. In this article, we will discuss the pros and cons of buying this gasket kit to help you make an informed decision.

Pros of buying a BFO S3J4G5 Cylinder Head Gasket Kit:

1. OEM Quality: The BFO S3J4G5 gasket kit is manufactured to meet OEM (Original Equipment Manufacturer) specifications, ensuring a proper fit and function.

2. Durability: High-quality materials are used to construct these gaskets, which can withstand the rigors of off-road riding and provide long-lasting performance.

3. Leak-Free Performance: The gaskets are designed to provide a leak-free seal between the engine block and cylinder head, preventing coolant and oil loss and potential engine damage.

4. Improved Engine Performance: A good head gasket allows optimal engine compression and combustion efficiency, which can lead to improved engine performance and power output.

5. Cost-Effective: Compared to the cost of a new engine or major engine rebuild, a head gasket kit is a cost-effective solution for addressing head gasket issues.

Cons of buying a BFO S3J4G5 Cylinder Head Gasket Kit:

1. Installation Complexity: Installing a cylinder head gasket can be a complex and time-consuming process, requiring specialized tools and knowledge.

2. Potential for Damage: During the removal and installation process, there's a risk of damaging other engine components, which could lead to additional repair costs.

3. Cost: While the gasket kit itself may be cost-effective, the labor and potential additional parts costs can add up.

Conclusion:

The BFO S3J4G5 cylinder head gasket kit is an excellent option for addressing head gasket issues on Honda CRF70, XR70, CT70, and C70 engines with 70cc and 50cc capacities. Its OEM quality, durability, leak-free performance, and potential for improved engine performance make it a worthwhile investment. However, the complexity and potential risks associated with installation and the additional costs that may arise should be considered. Ultimately, if you are experiencing head gasket issues, the benefits of this gasket kit may outweigh the challenges, providing a cost-effective solution for maintaining the longevity and performance of your engine.

Recommendation:

If you are considering purchasing the BFO S3J4G5 cylinder head gasket kit, ensure that you have the necessary tools, knowledge, or access to professional assistance for installation. Consult your local Honda dealer or a trusted mechanic for advice and guidance. Additionally, consider the potential costs of labor and additional parts during the installation process. With proper preparation and planning, you can enjoy the benefits of this reliable and durable gasket kit for your Honda engine.

Details:

Always the correct part. Compare the Combustion Chamber Size shown below, to your current head. PRODUCT DISPLAY Cylinder Head w/ Gasket Kit For Honda CRF70 XR70 CT70 C70 70cc 50cc engines. This head will only work with FLAT TOP pistons.

Cylinder Head for Honda CRF70 XR70 CT70 C70 ATC70 TRX70 S65 50cc Large Bore / 70cc Small. Manufacturer. Quick, Simple. For Honda S65.

Please follow our return. For Honda TRX70. Guaranteed Fitment. This head will only work with DOMED pistons.

specifications cylindermotorcycleiz:

  • for models: Crf70, Xr70, Ct70, C70
  • for makes: Honda
  • brand: Bfo
  • mpn: S3j4g5
  • bundle listing: Yes
  • california prop 65 warning: California Prop 65 Warning
  • compatible make: For Honda
  • compatible model: Atc70 Crf70 Ct70 C70 Trx70 Xr70 S65
  • engine: 50cc, 70cc
  • engine type: 4-stroke
  • exhaust valve outside diameter: 20mm
  • fit 1: For Honda 50cc Large Bore
  • fit 2: For Honda 70cc Small Bore Cylinder
  • fit for: For Domed 50cc Or Flat Top 70cc
  • including: Cylinder Head
  • inner bore size: 39mm
  • intake valve outside diameter: 23mm
  • items included: Gasket
  • length: 66mm
  • machine type: Off-road Motorcycle, Street Motorcycle
  • note: No Instruction Included
  • notice: This Is Aftermarket Replcement Part.
  • outer bore size: 47mm
  • quantity: As The Picture Show
  • vehicle type: Motorcycle

general cylindermotorcycleiz:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads
  • condition: New

offer cylindermotorcycleiz:

  • quantity: 10
  • started: February 14, 2026
  • best offers: True
  • options: Ship-to-home
  • sold: 0
  • availability: In Stock

payments cylindermotorcycleiz:

  • wallet: Apple-pay
  • credit card: Visa
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seller cylindermotorcycleiz:

  • rating: 98.4%
  • city: Houston, Texas
  • # reviews: 1145

returns cylindermotorcycleiz:

  • time: 30 Days
  • policy: Returns Accepted
  • paid by: Seller

shipping cylindermotorcycleiz:

  • carrier: FedEx
  • transit: 5-9 Days
  • type: Fixed
  • service: FedEx Ground / FedEx Home Delivery
  • class: Standard
  • cost: $0.00
for models: crf70, xr70, ct70, c70, for makes: honda, bundle listing: yes, california prop 65 warning: california prop 65 warning, compatible make: for honda, compatible model: atc70 crf70 ct70 c70 trx70 xr70 s65, engine: 50cc, 70cc, engine type: 4-stroke, exhaust valve outside diameter: 20mm, fit 1: for honda 50cc large bore, fit 2: for honda 70cc small bore cylinder, fit for: for domed 50cc or flat top 70cc, including: cylinder head, inner bore size: 39mm, intake valve outside diameter: 23mm, items included: gasket, length: 66mm, machine type: off-road motorcycle, street motorcycle, note: no instruction included, notice: this is aftermarket replcement part., outer bore size: 47mm, quantity: as the picture show, vehicle type: motorcycle,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > cylinder heads, sku: 13674675127796604,
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