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Air Filter with Box for Eton Beamer Viper Thunder Sierra 50cc-90cc ATV U9

Air Cleaner Box and Filter for E-Ton Beamer/Viper/Thunder/Sierra 50–90cc

SKU: NLT1Q00578
$36.99 In Stock
$36.99
Sale price  $36.99 Regular price 
Ships for free in 2–4 business days.
New aftermarket air-cleaner box and filter assembly for compatible E-Ton Beamer, Viper, Thunder, and Sierra 50–90cc scooter/ATV applications using the matching U9-style intake layout.
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Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
  • E-Ton Beamer 50cc/90cc—matching airbox
  • E-Ton Viper 50cc/70cc/90cc—matching airbox
  • E-Ton Thunder 90cc—matching airbox
  • E-Ton Sierra 90cc—matching airbox
  • Compatible U9-style 50–90cc applications by physical comparison

Product Overview

A missing or cracked airbox can make the engine noisy, let dirt reach the carburetor, and upset jetting by changing intake restriction. This assembly restores a protected filter housing for machines whose carburetor boot and frame mounts match.

E-Ton used several intake layouts across 50–90cc models. Compare the box shape, outlet diameter, mounting tabs, lid, and breather connections.

Key Features & Performance

  • Complete air-filter housing with filter element
  • Protects the engine from dust and trail debris
  • Restores original-style intake restriction and support
  • For compatible E-Ton 50–90cc platforms

Common Uses

  • Replacing a missing or damaged airbox
  • Correcting dirt entry caused by a poor filter seal
  • Returning a modified open-filter setup toward protected stock-style intake

Technical Specifications

  • Product Type: Air cleaner box and filter assembly
  • Engine Range: Compatible 50–90cc applications
  • Equipment: Scooter/ATV intake system
  • Condition: New
  • Replacement Type: Aftermarket

Installation & Fitment

  • Clean the carburetor inlet before connecting the new box
  • Match outlet diameter, mounts, and breather ports
  • Seat and lightly service the filter according to its material
  • Check that the housing does not rub the frame or exhaust

Compatibility Notice

Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.

Production date, engine type, transmission, trim, serial number, and previous repairs can change fitment. Compare the original part, mounting points, dimensions, connections, and listed reference numbers before purchase.

Frequently Asked Questions

Q: Can a missing airbox change how the engine runs? A: Yes. It changes intake restriction and can make jetting too lean.

Q: Does this fit every 90cc E-Ton? A: No. Compare the complete housing and mounts.

Q: Should the carburetor be cleaned too? A: If dirt entered through a failed filter system, inspect and clean it as needed.

Q: What is U9? A: Treat it as an intake/application reference and confirm the physical layout.

Part Summary

keywords: Eton Viper air box, Eton Beamer air filter, Thunder 90 air cleaner, Sierra 90 airbox, 50cc 90cc ATV filter housing

Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.

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