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  3. BOOST PRODUCTS SI-CAP-35S

BOOST PRODUCTS SI-CAP-35S Silicone Coolant 4250815863352 Cap 35MM 1-3/8

Si-cap-35s Boost Products Silicone Coolant Cap 35mm 1-3/8 Inch Id Black

( Brand: Boost Products ), ( Manufacturer Part Number: SI-CAP-35S ), ( Type: Coolant Caps ), ( Performance Part: Yes ), ( UPC: 250815863352 )

Review BOOST PRODUCTS Silicone Coolant Cap 35mm 1-3/8 Inch Id Black

The BOOST SI-CAP-35S Silicone Coolant Cap is a high-performance aftermarket replacement part designed specifically for vehicles requiring a 35mm (1-3/8 inches) coolant cap. This cap is engineered using premium-grade silicone material, ensuring a perfect seal and preventing coolant leaks. The silicone material is resistant to extreme temperatures, making it an ideal choice for high-performance engines.

This cap features a sleek and modern design, with a smooth and glossy finish that complements the look of any engine compartment. Its contoured shape allows for easy installation, ensuring a secure fit every time. The cap is also compatible with both positive and negative pressure cooling systems, making it a versatile option for various automotive applications.

The BOOST SI-CAP-35S Silicone Coolant Cap is manufactured to meet or exceed OEM specifications, ensuring reliable and long-lasting performance. Its superior sealing ability also helps to reduce the risk of coolant loss, which can lead to costly engine repairs and downtime. Additionally, the cap's resistance to corrosion and thermal shock makes it a durable solution for high-temperature environments.

Installing the BOOST SI-CAP-35S Silicone Coolant Cap is a straightforward process. Simply remove the old coolant cap, clean the surface, and apply a thin layer of sealant if necessary. Then, carefully install the new cap, ensuring a proper seal. The cap comes with a detailed instruction manual to guide you through the installation process.

In summary, the BOOST SI-CAP-35S Silicone Coolant Cap is a top-quality aftermarket replacement part designed for vehicles requiring a 35mm (1-3/8 inches) coolant cap. Its premium-grade silicone material ensures a perfect seal and prevents coolant leaks, while its sleek design complements the look of any engine compartment. The cap is versatile, compatible with both positive and negative pressure cooling systems, and resistant to extreme temperatures and corrosion. Installation is straightforward, making it a reliable and long-lasting solution for maintaining the cooling system of your vehicle.

The SI-CAP-35S silicone coolant cap from Boost is designed to replace the original coolant reservoir cap in various vehicles. Here are some potential pros and cons of purchasing this product:

Pros:

1. Material: The cap is made of high-quality silicone material, which is known for its superior sealing ability and resistance to extreme temperatures and vibrations.

2. Leak-free: The silicone material helps prevent coolant leaks, ensuring that the cooling system remains sealed and functional.

3. Easy installation: The cap is designed to be a direct replacement for the original coolant cap, making the installation process straightforward and hassle-free.

4. OEM fit: The cap is engineered to fit perfectly with the original coolant reservoir, ensuring a snug fit and proper sealing.

5. Durability: The silicone material is more durable than the rubber or plastic caps that come with some vehicles, making the Boost SI-CAP-35S a reliable long-term investment.

Cons:

1. Cost: The Boost SI-CAP-35S may be more expensive than some aftermarket rubber or plastic caps, which could be a deterrent for some buyers.

2. Availability: Depending on the specific make and model of the vehicle, the Boost SI-CAP-35S may not be readily available at local auto parts stores or online retailers.

3. Size: The cap may not fit on some vehicles with unique coolant reservoir designs, so buyers should double-check the compatibility before making a purchase.

Conclusion:

The Boost SI-CAP-35S silicone coolant cap offers several advantages over traditional rubber or plastic caps, including superior sealing ability, durability, and ease of installation. While it may be more expensive than some alternatives and not readily available for all vehicles, the benefits of the silicone material make it a worthwhile investment for those looking to prevent coolant leaks and maintain the performance and reliability of their cooling system.

Recommendation:

If you're in the market for a new coolant cap and are looking for superior sealing ability and durability, the Boost SI-CAP-35S silicone coolant cap is an excellent choice. Make sure to double-check the compatibility with your vehicle before making a purchase, and be prepared for the higher cost compared to some alternatives. Overall, the Boost SI-CAP-35S is a reliable and effective solution for preventing coolant leaks and maintaining the performance and reliability of your cooling system.

Details:

Rely on our quality!, BOOST Products silicone blanking caps have until 38mm 3 layers of fabric and 4,3mm wall thickness. The silicone blanking caps can withstand up to 5 Bar and temperatures 220 C. Is slowed down by closing open connections on the engine and parts. Manufacturer: BOOST Products, Part Number: SI-CAP-35S, condition: New: This Products Silicone end caps are reinforced with textile layers to be extreme pressure resistant and also vacuum in your Boost System.

This silicone is durable and flexible, stable color-proof after many years. They are not to be used get in contact with fuel or oil!, In contrast other suppliers, the Boost Products silicone caps reinforced thanks multiple fabric inserts, so they can also loaded pressure air/water. Also ideal when an engine and/or auxiliary parts have been removed and standing for a long time, corrosion etc. These caps are suitable for blanking of your inter cooler or radiator pipes/tubes, intake systems, water lines similar.

They come with a small subtle BOOST Products logo which proofs the silicone hoses' quality. After many tests we deliver best quality at the price. What you should consider with Silicone: - The diameter refers to the inner diameter, when choosing clamp take wall thickness x2 for right size, silicone Products are 1-3mm elastic, if can't find choose smaller one which is available. Lots of well known company's in the tuning and motor sport areas rely on silicone Products made by BOOST.

The BOOST Products silicone have achieved and many times even exceeded the quality of items compared to ones made by well known manufacturers in tests.

part #: sicap35s price

  • $22.07

specifications turbiparts:

  • brand: Boost Products
  • mpn: Si-cap-35s
  • type: Coolant Caps
  • performance part: Yes
  • upc: 250815863352

returns turbiparts:

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

general turbiparts:

  • Air Fuel Delivery > Turbos, Superchargers Intercoolers > Turbos Parts
  • condition: New

offer turbiparts:

  • quantity: 5
  • availability: In Stock
  • sold: 0
  • options: Ship-to-home
  • started: January 6, 2026

shipping turbiparts:

  • transit: 2-6 Days
  • type: Fixed
  • cost: $0.00
  • class: Standard
  • service: Standard

seller turbiparts:

  • city: San Leandro, California
  • # reviews: 118202
  • rating: 99.8%

payments turbiparts:

  • other
  • wallet: Google-pay
  • credit card: Diners-club
type: coolant caps, performance part: yes,
category: auto parts > air fuel delivery > turbos, superchargers intercoolers > turbos parts, sku: 11659544094765632,

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1 offer $22.07 USD
  • Offer #1: $22.07 price + $0.00 shipping estimate = $22.07* total. - silicone Products are 1-3mm elastic. This silicone is durable and flexible, stable and color-proof after many years.FREE SHIPPING

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