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SKU:
ZZ3F05395
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4" 90 Degree Boot 3 Ply Elbow Coupler Silicone Hose Thickness 4.5 mm 9781
$61.59
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$61.59
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$61.59
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Compatible Models
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Compatible equipment / model
4 Inch 90 Degree Boot 3 Ply Elbow Coupler Silicone Hose for 9781
This 4-inch 90 degree boot 3 ply elbow coupler silicone hose with a 4.5 mm thickness is a durable 4-ply silicone elbow designed for high-performance air intake and turbo systems, referencing cross-number 9781.
Overview
This 4 inch 90 degree boot is a 3 ply silicone elbow coupler crafted to connect intake piping, intercooler tubing, and turbocharger outlets at a right angle. The 4.5 mm wall thickness and 3 ply construction deliver robust reinforcement against blowouts, making it a reliable upgrade for boosted applications. This 90 degree elbow coupler is built to replace worn or failed OEM rubber hoses with superior heat resistance.
Built For Performance
- 3-ply silicone construction for high burst strength and resistance to flex fatigue.
- 4.5 mm wall thickness provides exceptional durability under high boost pressures.
- 4-inch inner diameter engineered for a secure fit on standard 4-inch piping.
- Reinforced with embedded fibers to prevent expansion and improve hose longevity.
- Handles temperatures from -60°F to 350°F, suitable for under-hood environments.
Fits These Machines
- For turbocharged diesel trucks with 4-inch intake and intercooler piping.
- For performance cars with aftermarket cold air intake systems.
- For tractor-trailer rigs requiring a 90-degree silicone boot connection.
On-The-Job Use
- Connecting a turbocharger outlet to an intercooler inlet pipe.
- Routing charge air piping around engine bay obstructions in a 90-degree path.
- Splicing together two sections of 4-inch aluminum intake pipe.
Specs At A Glance
| Diameter | 4 inches |
| Angle | 90 Degrees |
| Ply Rating | 3 Ply |
| Wall Thickness | 4.5 mm |
Good To Know
Q: Does this 3 ply elbow fit standard 4-inch silicone couplers? A: Yes, it is designed to connect to standard 4-inch OD pipes and pairs with regular 4-inch clamps for a secure seal.
Q: What is the main benefit of a 4.5 mm wall thickness? A: The thicker wall provides increased resistance to vacuum collapse and pressure expansion, ensuring stable boost delivery in demanding conditions.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.