Replaces Titan 704-289 / SprayTech 508676 Piston Guide Bushing – Epic & EPX

Replaces Titan 704-289 / SprayTech 508676 Piston Guide Bushing – Epic & EPX

Restore proper piston alignment in your airless sprayer fluid section with this aftermarket piston guide bushing that replaces Titan Part #704-289 and Wagner SprayTech Part #508676.

The piston guide bushing supports and guides the piston rod as it travels through the fluid section. A worn bushing can allow excessive piston movement or misalignment, contributing to packing wear, rod wear, fluid leakage, and poor pump performance.

This quality aftermarket bushing fits a wide range of Titan Epic, Advantage, PowrLiner and RentSpray equipment, along with Wagner SprayTech EPX and related Sherwin-Williams sprayers.

Part Information:

• Replaces Titan Part Number: 704-289
• Replaces Wagner SprayTech Part Number: 508676
• Product: Piston Guide Bushing / Piston Bushing
• Type: Aftermarket
• Application: Airless Paint Sprayer Fluid Section
• Brand Compatibility: Titan / Wagner SprayTech / Speeflo / Sherwin-Williams

Fits Titan Airless Paint Sprayers:

• 3100 SL
• 3205 E
• Advantage 400
• Epic 330
• Epic 440 HP
• Epic 440 i
• Epic 440 XC
• Epic 447 HPX
• Epic 550 XC
• Epic 640 i
• Epic 660 HPX
• PowrLiner 1800 M
• RentSpray 450

Fits Wagner SprayTech Airless Paint Sprayers:

• EPX 2155
• EPX 2255
• SW419 – EPX Style
• SW623 – EPX Style

Fits Additional Equipment:

• Speeflo PowrLiner 1800 M
• Sherwin-Williams SW419 – EPX Style
• Sherwin-Williams SW623 – EPX Style

Features:

• Replaces Titan 704-289
• Replaces Wagner SprayTech 508676
• Piston guide bushing for the fluid section
• Supports and guides the piston rod during operation
• Helps maintain proper piston alignment
• Reduces unwanted piston rod movement
• Helps protect packings and related fluid-section components from abnormal wear
• Fits numerous Titan Epic and Wagner EPX sprayers
• Quality aftermarket repair component
• Ideal for fluid-section rebuilding and maintenance

What the Piston Guide Bushing Does

As the displacement pump operates, the piston rod repeatedly travels through the fluid section at high speed.

The piston guide bushing supports the rod and helps keep it properly aligned during this reciprocating movement. Titan parts documentation identifies 704-289 as the bushing within the fluid-section assembly.

When the bushing becomes worn, excessive clearance can allow the piston rod to move laterally instead of traveling smoothly through the pump. This can place additional stress on the packings and other fluid-section components.

Common Signs of a Worn Piston Bushing:

• Excessive side-to-side movement in the piston rod
• Visible wear in the bushing
• Uneven piston rod movement
• Premature packing wear
• Repeated packing leakage
• Unusual wear on the piston rod
• Fluid-section noise or knocking
• Bushing is damaged during disassembly

Inspect the Piston Rod Too

If the guide bushing is worn enough to require replacement, inspect the piston rod carefully before reassembling the pump.

Look for:

• Scoring
• Grooves
• Pitting
• Corrosion
• Uneven wear
• Damage in the area that travels through the bushing and packings

Installing a new bushing around a badly worn piston rod may not correct the underlying problem.

While the pump is apart, it's also a good opportunity to inspect the upper and lower packings, cylinder, inlet and outlet valves, balls, seats, O-rings, and other sealing components.

Important:

This listing is for one aftermarket piston guide bushing that replaces Titan Part #704-289 and Wagner SprayTech Part #508676.

This is an aftermarket component and is not manufactured by Titan or Wagner SprayTech.

Because older sprayers may have had their fluid sections changed or rebuilt during their service life, always verify the 704-289 or 508676 part number for the pump currently installed on your machine before ordering.

Completely relieve fluid pressure and follow the manufacturer's pressure-relief procedure before servicing any airless paint sprayer.

Need help identifying fluid-section parts for an older Titan, Wagner or Speeflo airless sprayer? Contact us with your sprayer model and original part number—we'll help you find the correct parts to keep your equipment working.