SKU: 992768608

Hydraulic Trim Hose – Fits Volvo Penta SX & OMC Cobra Sterndrives (Replaces 3853857)

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Description

Hydraulic Trim Hose – Fits Volvo Penta SX & OMC Cobra Sterndrives (Replaces 3853857)Hydraulic Trim Hose Fits Volvo Penta SX & OMC Cobra Sterndrives (Replaces 3853857) This hydraulic trim hose connects the hydraulic manifold to the port cylinder for UP operation. It is designed for use with a range of Volvo Penta SX series and OMC Cobra sterndrives, ensuring reliable performance for your power trim system. This component is a direct replacement for Volvo Penta part numbers 3853857, 0985617, and 0778126; OMC part numbers 3853857,

Hydraulic Trim Hose – Fits Volvo Penta SX & OMC Cobra Sterndrives (Replaces 3853857)

This hydraulic trim hose connects the hydraulic manifold to the port cylinder for UP operation. It is designed for use with a range of Volvo Penta SX-series and OMC Cobra sterndrives, ensuring reliable performance for your power trim system.

This component is a direct replacement for Volvo Penta part numbers 3853857, 0985617, and 0778126; OMC part numbers 3853857, 0985617, and 0778126; Mercury part number 879083; Sierra part number 18-2135; and Mallory part number 9-71605.

  • Installation Location: Connects the hydraulic manifold to the port cylinder.
  • Function: Enables the 'UP' trim operation.
  • Included: One hydraulic trim hose.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
Volvo Penta 3853857
Volvo Penta 0985617
Volvo Penta 0778126
OMC 3853857
OMC 0985617
OMC 0778126
Mercury 879083
Sierra 18-2135
Mallory 9-71605

Compatible Engine Models

Confirm your engine model/year in the table below.

Volvo Penta Applications

Brand Model OEM Part No. Notes
Volvo Penta SX-M 3853857 Port Cylinder UP
Volvo Penta SX-C 3853857 Port Cylinder UP
Volvo Penta SX-C1 3853857 Port Cylinder UP
Volvo Penta SX-S 3853857 Port Cylinder UP
Volvo Penta SX-CLT 3853857 Port Cylinder UP
Volvo Penta SX-SLT 3853857 Port Cylinder UP

OMC Applications

Brand Model Years OEM Part No. Notes
OMC Cobra 1986-1998 3853857 Port Cylinder UP
OMC King Cobra - 3853857 Portside UP

Technical Specifications

Specification Value
Product Type Power Trim Hydraulic Hose
Installation Port Cylinder - UP Operation
Connection Hydraulic Manifold to Cylinder
Housing Material Rubber with Metal Fittings
Housing Color Black
Weight 0.09 lbs (0.04 kg)
Other Technical Attributes For Port UP Operation

Package Contents

  • 1 x Hydraulic Trim Hose (Replaces OEM Part 3853857)

Installation Guide

  1. Safety First: Before starting, disconnect the boat's battery and ensure the sterndrive is in a safe, supported position.
  2. Relieve Pressure: Carefully relieve any pressure from the hydraulic trim system by slightly loosening the manual release valve. Have rags ready to catch any fluid.
  3. Access the Hose: Locate the old hydraulic hose connecting the manifold to the port-side trim cylinder. Clean the area around the fittings to prevent contamination.
  4. Remove Old Hose: Using appropriate wrenches, carefully disconnect both ends of the hose. Be prepared for residual fluid leakage.
  5. Install New Hose: Connect the new hose, ensuring the fittings are correctly threaded and aligned. Do not cross-thread the fittings.
  6. Tighten Fittings: Securely tighten both ends of the hose to the manufacturer's recommended torque. Do not overtighten, as this can damage the fittings or threads.
  7. Bleed the System: Top off the hydraulic fluid reservoir and bleed the air from the system by cycling the trim up and down several times. Check the fluid level again and add more if needed.
  8. Inspect for Leaks: With the system pressurized, carefully inspect the new hose and fittings for any signs of leaks.

Troubleshooting & FAQ

Q: How do I confirm this hose fits my sterndrive?
A: The best way to ensure compatibility is to check your sterndrive's model (e.g., Volvo Penta SX-M, OMC Cobra) and year against the compatibility tables above. Also, verify that your original part number matches one of the numbers listed in our cross-reference table, such as 3853857.

Q: Which side and operation is this hose for?
A: This specific hose is for the port (left) side of the sterndrive and controls the UP operation of the power trim.

Q: What are the common signs that my trim hose needs to be replaced?
A: Common indicators include visible hydraulic fluid leaks around the hose or its fittings, a spongy or delayed response from the trim system, or visible cracks, bulges, or abrasion on the hose itself.

Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 992768608

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Caity
Cuba, US
★★★★★ 5
Great bathroom cabinet!
Color: White, Style: Wall Cabinet
My husband mounted this cabinet over our toilet and it’s the perfect addition! It looks great, matches the cabinets we already have and adds much needed storage! I plan on buying a second to put in my daughter’s/ the guest bathroom. The doors are magnetic and close securely, and the shelves are adjustable and feel sturdy. It was very easy to put together and feels very secure mounted on the wall
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Reviewed in the United States on June 28, 2025
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S. Hotchkiss
Lexington, US
★★★★★ 5
Great Purchase!
Color: White, Style: Wall Cabinet
Great quality. Easy to put together. Looks great!
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Reviewed in the United States on May 4, 2026
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Brittany McBride
Massapequa, US
★★★★★ 4
Mounting process could have been easier but still a beautiful cabinet
Color: White, Style: Wall Cabinet, Color: White, Style: Wall Cabinet
Beautiful cabinet seems to be good quality I just keep admiring something so beautiful about the white. The extra hardware is thoughtful. With some master skills I was able to get it mounted perfect. It was not a breeze but nonetheless I always find a way. I found the best way to mount this was to hold it against the wall and follow the pre-drilled holes at the bottom to drill the holes into the wall that wasnt that hard But for the top anchor/screws, the cabinet did not have pre-drilled holes and I was not about to guess !! So I used alien tape to tape the top wood bar to the unit as shown in pic then took the cabinet lined up the bottom holes while holding the cabinet up then I drilled holes through the unit with a small bit just to get the whole going then took it back down then followed the same holes with a bigger bit and it worked for me. It hung level. It was crazy that the pre-holes were not 16” apart when they could have been. I added extra screws to be able to mount them to a stud I didn’t feel comfortable with it not being mounted to a stud. The screws I had were too long gonna have to get some shorter screws. But it’s up & looks so nice DO NOT USE 11/32 bit. Don’t even use 5/16. I use 1/4 and kinda ran the drill in a circle to widen the whole and it was the perfect tight fit All in all I do love the cabinet. Just feel the mounting process could have been instructed more conveniently
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Reviewed in the United States on April 16, 2026
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Kissezamour
Battle Creek, US
★★★★★ 5
Love it !!!!
Color: White, Style: Wall Cabinet, Color: White, Style: Wall Cabinet
I absolutely love this cabinet. It’s super well-made easy to put together and the space is great. I’ve already received some compliments. Thought it would guests. Come to my home. Just look at how nice it pairs with my bathroom. The handles are sturdy. There’s also a nice tag inside with the company’s name. If you’re looking for a bathroom cabinet, highly recommended this one is well worth it. Love it!!!
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Reviewed in the United States on February 19, 2026
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J. S. Kline
Massapequa, US
★★★★★ 5
Excellent Cabinet for someone good at mounting a cabinet
Color: White, Style: Wall Cabinet
The cabinet arrived very well packaged with an instruction booklet, hardware, and an Allen wrench. The booklet says you will just need a Phillips screwdriver, but you will also need a drill with an appropriate bit (more on the bit later) to mount the cabinet on the wall. Assembling the cabinet was simplified by how well the cabinet pieces and hardware were labeled and referenced in the instruction booklet. The holes in all the cabinet parts lined up nicely. The doors swing on spring loaded pivots. They are not adjustable, but work well and are probably much less expensive than European style hinges. I was concerned that the doors would not line up, but they look fine. The Magnetic Latch also works well, but the little piece of wood that it mounts on fell off during assembly so I glued it back in place. This was the only problem I had assembling the cabinet. I let the glue dry overnight and mounted the cabinet the next day. The wood support plate they ship with the cabinet is a great way to hang a cabinet, however I did have some problems using the supplied anchors. I recommend having some other anchors and screws available in case you have similar issues. Skip this paragraph if you do not care about the details: I mounted the cabinet on drywall. The instructions said to drill 11/32” holes for the supplied plastic wall anchors. I did not have an 11/32” bit so I used a 5/16” bit. Even though my holes were 1/32” smaller than specified, the anchors slid into the drywall very easily without having to tap them. I recommend using a 5/16” bit or even a 9/32” bit instead of the 11/32” they specify. Next I mounted the support plate with the supplied screws, but I could not get the screws tight enough to hold the plate securely in place. It felt like the screws were too small in diameter so I used some slightly larger screws. That worked fine for one of the screws holding the plate and the two lower screws, but the second screw through the plate would not bite and hold the plate firmly. Fortunately I had one HILTI 3/16” hollow wall metal anchor left over from a previous project and was able to get the plate very solidly attached to the wall. My wife is very pleased with the cabinet. I did have some trouble with the latch and the install so I was tempted to knock off a star, but I think this is a 5-Star item considering the low cost and how well the the cabinet parts aligned with each other.
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Reviewed in the United States on January 20, 2025

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