JLO ROCKWELL 000-42-126-55 Nos Piston Rings L-372 L-380

( Brand: Jlo Rockwell ), ( Manufacturer Part Number: 000-42-126-55 ), ( Part Type: Ring Piston )

Review JLO ROCKWELL Vintage Genuine Nos Piston Rings Quantity Of

Introducing the JLO Rockwell 000-42-126-55 piston rings, a superior choice for engine performance and durability. These piston rings are engineered to exacting standards to ensure a perfect fit and optimal engine function.

The NOS L-372 and L-380 piston rings are designed for specific engine applications and are made from a high-quality materials for enhanced strength and longevity. The rings are precision machined to ensure a snug fit within the engine cylinder, minimizing the potential for leaks and maximizing engine compression.

The top compression ring, or L-372 ring, is designed to provide maximum sealing and compression. Its cross-sectional design ensures a tight seal against the cylinder wall, reducing the potential for blow-by and minimizing engine oil consumption. This ring is also designed to withstand the high temperatures and pressures within the engine cylinder, ensuring consistent engine performance over time.

The second compression ring, or L-380 ring, is designed to work in conjunction with the top compression ring to provide additional sealing and compression. Its slightly thinner design allows it to seat more easily within the cylinder, while its high-temperature resistance ensures that it can withstand the demands of modern engine designs.

These piston rings are manufactured to meet or exceed OEM specifications, ensuring that they provide the same level of performance and reliability as the original equipment. They are also designed to be interchangeable with OEM parts, making them a cost-effective solution for engine rebuilds or upgrades.

In summary, the JLO Rockwell 000-42-126-55 NOS L-372 and L-380 piston rings are a high-performance solution for engine rebuilds or upgrades. Their precise machining, high-quality materials, and exacting engineering ensure that they provide optimal engine function and long-lasting reliability.

JLo Rockswell piston rings with the part numbers 000-42-126-55 (for size L-372) and 000-42-126-55 (for size L-380) are used in internal combustion engines to seal the piston to the cylinder wall. Let's discuss some potential pros and cons of buying these piston rings.

1. High-quality materials: JLo Rockswell is a reputed brand known for its high-quality engine parts. These piston rings are made from top-notch materials, ensuring durability and optimal engine performance.

2. Precise fit: These piston rings are designed to fit perfectly in the specified engine sizes (L-372 and L-380). A precise fit ensures efficient sealing and minimal engine wear.

3. Improved engine performance: By sealing the piston to the cylinder wall effectively, these piston rings can help improve engine performance by reducing compression losses and minimizing oil consumption.

4. Long-lasting: The high-quality materials used in the manufacture of these piston rings make them long-lasting, reducing the frequency of replacements and saving you money in the long run.

1. Cost: Compared to some aftermarket or OEM alternatives, JLo Rockswell piston rings may be more expensive. However, the premium price tag comes with the assurance of high-quality materials and precise fit.

2. Availability: These piston rings may not be readily available at local auto parts stores and may need to be ordered online. This could lead to a longer wait time for the replacement parts.

In conclusion, JLo Rockswell piston rings offer several advantages, including high-quality materials, precise fit, improved engine performance, and long-lasting durability. The primary downsides are the cost and potential availability issues. If you prioritize engine performance and are willing to pay a premium for high-quality parts, then these piston rings could be an excellent investment for your vehicle. On the other hand, if you're on a tight budget or prefer to purchase parts locally, you may want to consider alternative options. Ultimately, the decision depends on your specific needs, budget, and engine requirements.

Details:

These fit the L-372 L-380 model's. Quantity of 4 Genuine JLO Rockwell NOS piston rings, part number 000-42-126-55.

part #: 0004212655 prices

• $29.99-$165.99

specifications enginesnowmobile:

• brand: Jlo Rockwell
• mpn: 000-42-126-55
• part type: Ring Piston

general enginesnowmobile:

• condition: New
• Snowmobile Parts > Engines Components > Snowmobile Engine Components

seller enginesnowmobile:

• rating: 99.7%
• city: Farmington, Pennsylvania
• # reviews: 11745

offer enginesnowmobile:

• quantity: 1
• options: Ship-to-home
• sold: 0
• availability: In Stock
• started: February 10, 2026

returns enginesnowmobile:

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

shipping enginesnowmobile:

• transit: 3-8 Days
• cost: $5.52
• carrier: USPS
• type: Calculated
• class: Standard
• service: USPS Ground Advantage

payments enginesnowmobile:

• credit card: Mastercard
• wallet: Apple-pay
• other

Jlo Rockwell 000-42-126-55 Is Similar To:

• 000.41.27-094 Jlo Rockwell L-297 Cylinder (30.2% similar) This is for a package of 5 Jlo Rockwell cylinder head studs. Vintage snowmobiles and ATV nos parts may have shelf wear. Buyer pays return shipping. Shipping: buyer pays listed shipping costs this is an new old stock item not in the oem package may have some miner rust...(July 13th, 2017)
• 07.002 00 Jlo Rockwell 399 (25.2% similar) Please study all pictures for condition. All threads cooling fins in good shape. Cylinders from 399 Jlo engine,have some scoring...(March 31st, 2017)
• 079-61-806-00 Jlo Rockwell L-99 Full (28.1% similar) These are new old stock. Shipping: buyer pays listed shipping costs. This is for one new old stock full gasket set with seals. Part number fits these motorcycle this is all new old stock genuine Jlo Rockwell parts. Buyer pays return shipping...(July 10th, 2017)
• 079.01.003-00 Jlo Rockwell Crankcase Pto (25.6% similar) PTO side they are new old stock not in the oem box. Buyer pays return shipping. Shipping: buyer pays listed shipping costs. This is for one new old stock Jlo Rockwell crankcase half...(September 11th, 2017)
• 09-660 Spi Jlo Cuyuna Scorpion Piston Kits (28.3% similar) I am a one man show with almost 50 years of retail background. Fast shipping. I am not perfect but will do anything reasonable to make the sale right...(May 15th, 2018)
• 099.05.900 00 Piston Nos Vintage Jlo 100cc (28.3% similar) This is for the L99 100CC motor. Part no nos Jlo 100CC piston, rings, wrist pin c-clips...(February 18th, 2017)
• 152.07.729-00 Jlo Rockwell Ilo L-152 (29.8% similar) L-152 this is a new old stock parts. Not in the oem package. Head part number this is for one set of new old stock Jlo Rockwell IL cylinder and base gaskets...(September 12th, 2017)
• 2372cd Jlo Cuyuna Piston And Rings 1974-1980 (32.6% similar) Both are brand new in box...(June 21st, 2016)
• 2060p2 Wiseco Vintage Snowmobile Jlo Single Cylinder Oversize Piston (32.7% similar) The part number on this piston is 2060P2. This is a oversize piston, comes with rings and clips. This listing is for a new Wisc brand piston...(May 18th, 2018)
• Scorpion Snowmobile Vintage Columbia Jlo Wiseco John 2069ps Deere Pistons Lr440 (29.3% similar) Picture is just an illustration of what you are getting, may not reflect actual item. Up for bid is a pair 2 of new, nos Jlo pistons for the LR440 motor Wisc part number 2069PS standard bore. Included are the piston, rings, and clips. Item is sold as is and is non returnable so look at picture ...(March 12th, 2015)
• 2070p6 Wiseco Nos Scorpion Jlo Rockwell Cuyuna (22.9% similar) I am a one man show with almost 50 years of retail background. Fast shipping. I am not perfect but will do anything reasonable to make the sale right...(May 15th, 2018)