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Sierra 18-9078 Washer-SS Yamaha #90201-22M01

SKU: 4003321 - UPC: 808282290962 - MPN: 18-9078
$1.69 $3.59 ( / )

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Discover the Reliability of Sierra 18-9078 Stainless Steel Washer for Yamaha Outboards Every boater knows the frustration of a loose fastener turning a smooth day on the water into a maintenance headache. That's where the Sierra 18-9078 washer steps in as a game-changer. Crafted as a direct replacement for the...
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Sierra 18-9078 Washer-SS Yamaha #90201-22M01 Product Description

Discover the Reliability of Sierra 18-9078 Stainless Steel Washer for Yamaha Outboards

Every boater knows the frustration of a loose fastener turning a smooth day on the water into a maintenance headache. That's where the Sierra 18-9078 washer steps in as a game-changer. Crafted as a direct replacement for the Yamaha OEM part #90201-22M01, this stainless steel washer delivers unwavering performance in the harsh marine environment. Its precision-engineered design ensures a secure fit, preventing vibrations from compromising your engine's integrity during long runs or choppy seas.

Why Stainless Steel Makes All the Difference

In saltwater conditions, corrosion is the enemy of every metal component. The Sierra 18-9078 features high-grade stainless steel construction that resists rust and pitting far better than standard washers. This isn't just about longevity—it's about peace of mind. Whether you're attaching exhaust components, securing trim systems, or bolting powerhead parts, this washer maintains its tension and shape, reducing the risk of failures that could sideline your Yamaha outboard.

  • Exact OEM Specifications: Matches the dimensions and tolerances of Yamaha #90201-22M01 for plug-and-play installation.
  • Superior Corrosion Resistance: Ideal for both freshwater and saltwater use, extending service life.
  • Vibration Dampening: Wave-style design absorbs shocks, protecting threads and adjacent parts.
  • Cost-Effective Quality: Sierra's rigorous testing ensures reliability without the OEM price tag.

Perfect Fit for Your Yamaha Outboard

Boaters upgrading or repairing their Yamaha engines often search for reliable replacements that don't require modifications. The 18-9078 washer integrates seamlessly into a wide range of models, commonly found in 4-stroke powerheads, lower units, and accessory mounts. It's a staple in maintenance kits for popular setups, helping enthusiasts keep their rigs running like new. Always cross-reference with your service manual to confirm application, but its versatility makes it a go-to for many Yamaha owners.

Effortless Installation Tips from Seasoned Mechanics

Installing the Sierra 18-9078 is straightforward, but a few pro tips can make it foolproof:

  1. Clean all mating surfaces thoroughly to remove salt residue or old sealant.
  2. Use anti-seize compound on the bolt threads for easy future disassembly.
  3. Torque to manufacturer specs—typically 10-15 ft-lbs for similar fasteners—to avoid over-tightening.
  4. Inspect surrounding components for wear; replace in pairs if one shows damage.
  5. After assembly, run the engine at idle and check for unusual noises.

These steps not only secure the washer but also enhance overall engine health, potentially preventing more expensive repairs down the line.

Boost Your Boat's Performance and Longevity

Choosing Sierra means investing in parts backed by decades of marine expertise. This washer isn't a generic afterthought—it's engineered to meet or exceed OEM standards through stringent quality controls. Boaters report fewer comebacks and smoother operation after swapping in Sierra components. Pair it with routine inspections, and you'll maximize your Yamaha outboard's uptime, whether you're fishing offshore or cruising the bay.

Frequently Asked Questions

What is the Sierra 18-9078 washer used for?

The Sierra 18-9078 is a stainless steel wave washer designed as a direct replacement for Yamaha OEM #90201-22M01. It's commonly used to secure engine components like exhaust manifolds, power trim assemblies, and gearcase parts, providing vibration resistance and reliable fastening.

Is the Sierra 18-9078 compatible with my Yamaha outboard?

Yes, it directly replaces Yamaha #90201-22M01 and fits many 4-stroke models. Consult your engine's parts diagram or service manual to verify exact fitment for your setup.

What material is the Sierra 18-9078 made from?

It's constructed from high-quality stainless steel, offering excellent corrosion resistance for marine environments, both fresh and salt water.

How do I install the Sierra 18-9078 washer?

Clean surfaces, apply anti-seize to threads, position the washer, and torque the fastener to spec (usually 10-15 ft-lbs). Test run the engine afterward to ensure security.

Does the Sierra 18-9078 match OEM quality?

Absolutely. Sierra subjects it to rigorous testing to meet or exceed Yamaha's standards in fit, finish, and durability.

Why choose Sierra over other aftermarket washers?

Sierra's reputation for marine parts reliability, combined with precise engineering and corrosion-resistant materials, makes it a trusted choice for boaters seeking value without compromise.

Can I use the Sierra 18-9078 in saltwater?

Yes, its stainless steel composition is specifically optimized for saltwater exposure, preventing rust and maintaining performance over time.

Washer-SS Yamaha #90201-22M01



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Sierra 18-9078 Washer-SS Yamaha #90201-22M01 Technical Specifications

Type: 

Engine | Miscellaneous

Vendor: 

Sierra Engine Parts

Weight: 

0.01 lb

Sierra 18-9078 Washer-SS Yamaha #90201-22M01 User Reviews

Sierra 18-9078 Washer-SS Yamaha #90201-22M01 Shipping & Return

Shipping Weight: 

0.01 lb

Box Sizes: 

0.00 (h) x 4.00 (w) x 4.00 (l)

Cubic Feet: 

0.0

Returnable: 

Yes

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Sierra 18-9078 Washer-SS Yamaha #90201-22M01

$1.69 $3.59 ( / )