SPI 09-712-04 Piston Snow .040 488CC 73MM

( Brand: Spi ), ( Manufacturer Part Number: 09-712-04 ), ( Part Type: Piston ), ( Country Of Origin: Taiwan )

Review SPI .040 Over Bore Piston Kits Polaris Snow 488cc 73mm fits 500 1985–2006

Introducing the SPI 09-712-04 040 piston, an essential component for the maintenance and optimal performance of your Polaris 500 snowmobile engine from the model years 1985 to 2006. This piston is specifically designed for 488cc, 73mm engines, making it an ideal choice for those seeking a reliable replacement.

The SPI 09-712-04 040 piston is meticulously crafted from high-quality materials, ensuring durability and longevity. Its precision-engineered design enables it to closely match the original equipment specifications, ensuring a seamless fit and reliable operation.

The piston features a forged ring land design, which provides exceptional strength and durability, even in the most demanding conditions. Its top ring groove measures 1.9mm, while the second ring groove measures 1.7mm, offering optimal compression and power output. The piston skirt is also designed to minimize friction, reducing wear and ensuring a smooth engine operation.

The SPI 09-712-04 040 piston is also manufactured with a superior coating, providing an additional layer of protection against engine heat and potential scuffing. This coating also aids in the piston's cooling process, ensuring the engine runs efficiently and at optimal temperatures.

In summary, the SPI 09-712-04 040 piston is a high-performance, durable, and reliable replacement option for your Polaris 500 snowmobile engine. Its precise fit, forged ring land design, and superior coating make it an excellent choice for snowmobilers seeking to maintain their engine's performance and longevity.

Buying the SPI 09-712-04 040 piston for a Polaris 500 snowmobile model from 1985 to 2006 with a 488cc, 73mm engine involves considering several factors to help make an informed decision. Here are some pros and cons of purchasing this specific piston for your snowmobile.

1. OEM (Original Equipment Manufacturer) Replacement: This piston is an original replacement part from the manufacturer, ensuring a proper fit and reliable performance.

2. Improved Engine Performance: A new piston can lead to improved engine performance, including better fuel efficiency and increased power output.

3. Longer Service Life: A high-quality aftermarket piston like the SPI 09-712-04 040 can offer a longer service life compared to a worn or failing original piston.

1. Cost: Replacing a piston is a significant investment, especially for an older snowmobile. The cost of the SPI 09-712-04 040 piston, labor, and other related expenses can add up.

2. Installation Complexity: Installing a new piston requires specialized tools and knowledge, potentially leading to added labor costs and the risk of installation errors.

3. Potential for Additional Repairs: Replacing a worn or failing piston may indicate other underlying engine issues that could also require attention and additional repair costs.

Purchasing the SPI 09-712-04 040 piston for your Polaris 500 snowmobile model can provide several benefits, including improved engine performance, a longer service life, and the peace of mind that comes with using an OEM replacement part. However, the significant investment required and the potential for additional repairs should be carefully considered before making a purchase.

If your snowmobile's engine performance is suffering, and you've had the piston checked and determined it is the issue, then replacing it with the SPI 09-712-04 040 piston is a recommended course of action. Ensure you have the necessary tools and knowledge to install it yourself, or seek the assistance of a professional mechanic to minimize the risk of installation errors. Additionally, consider having your engine inspected to identify and address any potential underlying issues that could require additional repairs.

Details:

Piston weight is compatible with original piston. All SPI pistons, rings, pins cir clips are manufactured to OEM specifications. Manufactured by SPI. Made in Taiwan.

T-Molly series pistons reduce friction, resist seizure improve durability. 1986 Trail 488. Compatible with Polaris model's below: 1985 Trail 488. T-Molly series with Teflon-Molybdenum coating.

Pistons are for .040 over bore size 73.00mm. Includes 2 pistons, ring sets, wrist pins cir clips as pictured.

part #: 0971204 prices

• $25.99-$133.93

specifications enginesnowmobile:

• for models: 500
• for makes: Polaris
• for years: 1985-2006
• brand: Spi
• mpn: 09-712-04
• part type: Piston
• country of origin: Taiwan

offer enginesnowmobile:

• availability: In Stock
• options: Ship-to-home
• quantity: 3
• started: June 5, 2026
• sold: 0

shipping enginesnowmobile:

• cost: $0.00
• service: Standard
• transit: 4-8 Days
• class: Standard
• type: Fixed

general enginesnowmobile:

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

returns enginesnowmobile:

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

seller enginesnowmobile:

• # reviews: 419254
• city: Suamico, Wisconsin
• rating: 99.9%

payments enginesnowmobile:

• other
• wallet: Paypal
• credit card: Mastercard

Spi 09-712-04 Is Similar To:

• 1 09-694n Spi Piston Kit Arctic Cat El Tigre Standard 802024086769 (31.4% similar) After seeing that success forward was born. Many other companies just put up what they think the parts fit. More excess inventories were hunted down and sold. Shipping in continental us is free. We branched out into specific parts people need to keep their machines going. A deal was made and that ...(May 8th, 2018)
• 1 09-699n Spi Piston Kit Arctic Cat Cheetah El Tigre 802024086806 (28.9% similar) A deal was made and that inventory sold online over the next few months as sideline job. After seeing that success forward was born. Many other companies just put up what they think the parts fit. Shipping in continental us is free. We branched out into specific parts people need to keep their ...(June 11th, 2018)
• 1 09-701n Spi Piston Kit Polaris Tx Standard Bore 802024086981 (51% similar) Shipping in continental us is free. We branched out into specific parts people need to keep their machines going. Many other companies just put up what they think the parts fit. A deal was made and that inventory sold online over the next few months as sideline job. After seeing that success forward...(June 16th, 2018)
• 1 09-711191 Spi Complete Engine Gasket Set Kit Polaris Indy 642141104638 (39% similar) Shipping in continental us is free. We branched out into specific parts people need to keep their machines going. Many other companies just put up what they think the parts fit. A deal was made and that inventory sold online over the next few months as sideline job. More excess inventories were ...(July 5th, 2018)
• 1 09-711265 Spi Complete Engine Gasket Kit Polaris Indy Rmk 703624226923 (40.3% similar) After seeing that success forward was born. Shipping in continental us is free. More excess inventories were hunted down and sold. Many other companies just put up what they think the parts fit. We branched out into specific parts people need to keep their machines going. A deal was made and that ...(July 15th, 2018)
• 1 09-711307a Spi Complete Engine Gasket Kit Polaris Rmk Es 703624226855 (39.2% similar) Spi complete engine gasket kit polaris 700 Mk 155 es CFO set manufactured by contains all gaskets pictured to rebuild an engine, including oil seals with stainless steel springs for maximum performance and corrosion resistance. More excess inventories were hunted down and sold. Shipping in ...(July 13th, 2018)
• 1 09-712-06 Spi Over Bore Piston Kit Polaris Indy Classic 642141104522 (57.3% similar) We branched out into specific parts people need to keep their machines going. Shipping in continental us is free. 50MM snow season is upon us and here a chance to freshen up that snowmobile for the year. Many other companies just put up what they think the parts fit. A deal was made and that ...(May 25th, 2018)
• 1 09-716-02 Spi Over Bore Piston Kit Polaris Indy Xcr 802024087438 (65.4% similar) Shipping in continental us is free. 020 over bore size 65. After seeing that success forward was born. 020 over bore piston kit polaris Indy 600 Cr, XLT, triumph 65. Many other companies just put up what they think the parts fit. We branched out into specific parts people need to keep their machines...(July 1st, 2018)
• 1 09-716-03n Spi Over Bore Piston Kit Polaris Indy Xcr Xlt Triumph (58.8% similar) More excess inventories were hunted down and sold. 030 over bore piston kit polaris Indy 600 Cr, XLT, triumph 65. Many other companies just put up what they think the parts fit. 030 over bore size 65. After seeing that success forward was born. We branched out into specific parts people need to keep...(July 2nd, 2018)
• 1 09-726-02 Spi Over Bore Piston Kit Polaris Rmk Widetrack 703624230999 (58.2% similar) More excess inventories were hunted down and sold. 020 over bore piston kit polaris 500 Mk sidetrack classic touring 72. We branched out into specific parts people need to keep their machines going. Many other companies just put up what they think the parts fit. A deal was made and that inventory ...(June 28th, 2018)
• 1 09-780-04std Spi Piston Kit Mach Lt Standard Bore 802024088220 (45% similar) Please with any questions about a warranty on particular item. You can then purchase the correct item at any time. You can use the ask a question link near bottom of every listing. Post office. There is no combined shipping discount...(August 30th, 2018)