Mishimoto MMHOSE-392-21OC Silicone Oil Cooler Hose for 2021+ Jeep Wrangler JL Rubicon 392

The factory oil cooler hose on the 2021+ Jeep Wrangler JL Rubicon 392 cracks and collapses at the bend - the OEM rubber cracks and fails under the repeated heat cycling the 392 V8 generates in trail and low-speed use, splitting at the point of greatest flex. The Mishimoto Silicone Oil Cooler Hose replaces the factory hose with a single continuous silicone piece engineered to hold its shape through the bend, eliminating the failure mode at its source.----The bore follows a smooth internal taper through the full length of the hose, eliminating the pressure pockets and flow restriction the plastic joiner creates at the step change. Embedded fiber reinforcement throughout the silicone wall resists expansion and collapse under sustained pressure - where factory rubber softens and distorts over time, the silicone construction holds its shape and seal. Worm-gear clamps are included for a secure, field-serviceable connection at each end.----Direct fit for the 2021+ Jeep Wrangler JL Rubicon 392. No drilling, cutting, or modification required. Backed by the Mishimoto Lifetime Warranty. Complete Engine Oil Cooler Hose Assembly designed to replace the factory hose with a single continuous silicone piece engineered to hold its shape through the bend, eliminating the failure mode at its source.

• One-piece silicone outlasts the factory hose - the OEM rubber hose cracks and fails at the bend under repeated heat cycling; the Mishimoto replacement is a single continuous silicone piece that holds its shape, with no weak point to split.
• Smooth internal taper prevents pressure pockets - the bore transitions without a step or ridge, so coolant flows without restriction or turbulence at the junction where the plastic joiner previously interrupted flow.
• Reinforced fiber construction outlasts OEM rubber - embedded fiber reinforcement resists expansion, collapse, and abrasion under sustained system pressure, where factory rubber softens and degrades over time.
• Drops in without modification — confirmed direct fit for the 2021+ Jeep Wrangler JL Rubicon 392, no cutting, fabricating, or adapter work required.
• Own it for life - backed by Mishimoto’s Lifetime Warranty, your investment is protected long after install day.

The Mishimoto MMHOSE-392-21OC Silicone Oil Cooler Hose is a direct-fit replacement for the factory oil cooler hose on the 2021 and newer Jeep Wrangler JL Rubicon 392. Designed for the high heat and repeated thermal cycling produced by the 392 V8 during trail driving and low-speed operation, this complete engine oil cooler hose assembly replaces the vulnerable factory rubber hose with a single continuous silicone piece. Its one-piece construction eliminates the weak bend area where the original hose can crack, split, or collapse over time.
The hose features a smooth internal taper through its full length to promote consistent fluid flow and eliminate the pressure pockets and restriction created by the stepped plastic joiner used in the factory design. Embedded fiber reinforcement helps the silicone wall resist expansion, collapse, abrasion, and deformation under sustained system pressure. Unlike factory rubber, which can soften and distort with age and heat exposure, the Mishimoto silicone construction is engineered to maintain its shape and sealing performance through demanding operating conditions. Worm-gear clamps are included for a secure, serviceable connection at both ends.
Installation is straightforward, with no drilling, cutting, fabrication, or adapter work required. The Mishimoto MMHOSE-392-21OC is confirmed to fit 2021, 2022, 2023, 2024, 2025, and 2026 Jeep Wrangler models equipped with the JL Rubicon 392 engine configuration. This replacement hose helps address the factory hose failure point while providing durable construction for long-term use. The assembly is backed by Mishimoto's Lifetime Warranty for added confidence after installation.

Features:

• One-piece silicone construction replaces the factory rubber hose and eliminates the vulnerable bend where cracking and splitting can occur.

• Smooth internal taper promotes consistent oil cooler flow without the pressure pockets, turbulence, or restriction caused by a stepped plastic joiner.

• Embedded fiber reinforcement resists expansion, collapse, abrasion, and deformation under sustained pressure and repeated heat cycling.

• Direct-fit replacement for 2021 and newer Jeep Wrangler JL Rubicon 392 models with no drilling, cutting, fabrication, or modifications required.

• Worm-gear clamps are included for secure, field-serviceable connections at both ends.

• Backed by the Mishimoto Lifetime Warranty for long-term product protection.

Compatible With
2021 Jeep Wrangler
2022 Jeep Wrangler
2023 Jeep Wrangler
2024 Jeep Wrangler
2025 Jeep Wrangler
2026 Jeep Wrangler