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Graco 495st ProB Lo-Boy (232943) Pump (243183) Airless Paint Sprayers

Graco 495st ProB Lo-Boy (232943) Pump (243183) Airless Paint Sprayers
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Graco 246426 Pump Assembly

Item No: 1

Part Number: 246426

UPC Number: 633955950061

 Graco 246426 Pump Assembly is for use on several older model Graco sprayers, including the 295ST,...

Retail Price: $560.00
You save: $81.76 (14.60%)
Our Price: $478.24
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Graco 243190 Intake Seat Repair Kit

Item No: 2

Part Number: 243190

UPC Number: 633955917781

Graco 243190 Intake Seat Repair Kit is designed to fit several Graco pumps, including the Pump 24...

Retail Price: $67.50
You save: $5.13 (7.60%)
Our Price: $62.37
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Graco 243174 Piston Rod Kit

Item No: 3

Part Number: 243174

UPC Number: 633955917774

Retail Price: $88.00
You save: $18.83 (21.40%)
Our Price: $69.17
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Graco 180656 Button Plug

Item No: 4

Part Number: 180656

UPC Number: 633955261822

$7.13
QTY:
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Graco 193047 Packing Nut

Item No: 5

Part Number: 193047

UPC Number: 633955823280

Retail Price: $34.00
You save: $0.68 (2.00%)
Our Price: $33.32
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Graco 176757 Female Gland Packing

Item No: 6

Part Number: 176757

UPC Number: 633955068124

$8.69
QTY:
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Graco 176754 Male Gland Packing

Item No: 7

Part Number: 176754

UPC Number: 633955371729

$13.69
QTY:
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Graco 243176 Pump Cylinder

Item No: 8

Part Number: 243176

UPC Number: 633955917866

Retail Price: $161.50
You save: $34.56 (21.40%)
Our Price: $126.94
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Graco 105444 Ball Stainless Steel Piston Component

Item No: 9

Part Number: 105444

UPC Number: 633955478855

$7.13
QTY:
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Graco 195129 Male Piston Gland

Item No: 10

Part Number: 195129

UPC Number: 633955930896

$10.71
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Graco 180073 Female Gland Packing

Item No: 11

Part Number: 180073

UPC Number: 633955528215

$16.82
QTY:
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Graco 105522 U-Cup Seal for Reliable Performance

Item No: 12

Part Number: 105522

UPC Number: 633955390652

$23.95
QTY:
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Graco 186652 Back-Up Washer

Item No: 13

Part Number: 186652

UPC Number: 633955591493

Graco 186652 Back-Up Washer is an essential component used in various Graco pumps to support the wip...

$9.71
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Graco 243181 Piston Valve Repair Kit

Item No: 14

Part Number: 243181

UPC Number: 633955917804

Graco 243181 Piston Valve Repair Kit is a genuine OEM part designed for various Graco sprayers. It ...

Retail Price: $108.50
You save: $9.01 (8.30%)
Our Price: $99.49
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Graco 196896 Ball Guide

Item No: 15

Part Number: 196896

UPC Number: 633955958968

$27.10
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Graco 195134 Ball Guide Spacer

Item No: 16

Part Number: 195134

UPC Number: 633955943056

$6.30
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Graco 195133 Intake Valve Housing

Item No: 17

Part Number: 195133

UPC Number: 633955933750

Retail Price: $47.60
You save: $2.62 (5.50%)
Our Price: $44.98
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Graco 195136 O-Ring - Special

Item No: 18

Part Number: 195136

UPC Number: 633955933767

$6.30
QTY:
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Graco 105445 Stainless Steel Ball (0.5000 Inch)

Item No: 19

Part Number: 105445

UPC Number: 633955014640

$7.51
QTY:
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Graco 108526 O-Ring Packing

Item No: 20

Part Number: 108526

UPC Number: 633955078024

$15.95
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Graco 117459 O-Ring Packing

Item No: 21

Part Number: 117459

UPC Number: 633955017122

$6.30
QTY:
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Graco 176755 Vee Throat Leather Packing

Item No: 22

Part Number: 176755

UPC Number: 633955194267

$12.26
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Graco 192710 V-Packing

Item No: 23

Part Number: 192710

UPC Number: 633955793927

$13.33
QTY:
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Graco 176749 Vee Leather Packing

Item No: 24

Part Number: 176749

UPC Number: 633955147010

$8.69
QTY:
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Graco 192712 Vee Piston Packing

Item No: 25

Part Number: 192712

UPC Number: 633955793934

$10.90
QTY:

Genuine Graco 495ST ProB Lo-Boy (232943) Pump (243183) – Complete Airless Sprayer Parts List & Performance Guide

The heart of the classic ST Pro™ 495 system is the 243183 displacement pump—a Chromex-hardened workhorse rated at 3000 psi and 0.54 gpm max delivery. Because it drops into every 232943 Lo-Boy chassis built between 1999-2008, a single spare lower can rescue fleets scattered across multiple crews and counties.

Contractors in Houston, Phoenix, and Pittsburgh count on the 495’s rock-solid motor/pump combo to spray block-fillers one day and fine-finish enamels the next. The key is OEM tolerances: knock-off rods glaze packings in weeks, while Graco’s Chromex rods routinely last 750–1000 spray hours before repack

Five Reasons Pros Pick the 243183 Pump

  • Chromex™ Rod & Stainless Sleeve – 6× longer life than economy steel lowers 
  • Quick-Change Packing Stack – swap V-Max™ Blue seals in under 20 min with QuikPak kits
  • Self-Cleaning Prime Valve – Vibra-Seat design purges debris for no-stall startups
  • Tool-Free Pump Removal – two hand-knobs release the lower; no hammers, no blown timelines
  • Cross-Fleet Hardware – identical outlet threads match graco paint sprayer 395 & graco magnum xr7 parts, so you stock one filter family for all rigs

Key Performance Specs

  • Maximum Working Pressure: 3000 psi / 207 bar 
  • Maximum Flow: 0.54 gpm / 2.05 lpm 
  • Max Tip Size (1-gun): 0.023 in 
  • Recommended Hose Length: 150 ft with minimal dead-band
  • Motor: ¾ HP UL-listed universal, 120 V – brushes available as kit 236967

Which Machines Does the 243183 Pump Fit?

Direct bolt-on for:

  • ST Pro 495 Lo-Boy (232943) & Stand (232940) sprayers 
  • ST Pro 455 & 395 when upgraded with 243183 kit (threads match drive rod)
  • Legacy Ultra Max II 495 PC Pro – flows slightly higher (0.60 gpm) but shares suction & outlet geometry 
  • Graco paint sprayer 395 – identical Easy-Out™ filter & RAC X™ guard

Cross-Stock Parts for Mixed Fleets

Keep one bin of graco spray pump parts for your 495ST and Magnum XR7 rigs; the valves, outlet fittings, and suction O-rings are common across both platforms. Houston-area refinishers love this because one truck run to our Jones Road service counter covers commercial and DIY rentals in a single purchase.

Shop-Floor Hacks for 10-Year Pump Life

  1. Log hours, not months — Repack every 750–1000 spray hours; note the change in the graco paint sprayer parts diagram.
  2. Daily TSL Drip — Add one drop of Throat Seal Lubricant before each shift to cool packings.
  3. Color-Code Bins — Yellow for belts, red for packings, blue for graco paint sprayer attachments so night shifts grab the right box first-time.
  4. Carry a Spare Pump — The 243183 lower swaps in under 60 seconds—faster than mixing a second five-gallon pail.
  5. Flush Hot — End-of-day FastFlush™ mode (4× faster, half the water) from the Ultra Max platform works on ST Pro as well

Bundle & Save Freight

  • 17H839 QuikPak™ Kit – one-piece cartridge rebuild for any ST-series pump
  • 246215 RAC X™ Blue Guard – universal 7/8-G threads fit 495, 395, Magnum XR7 & TrueCoat guns
  • 288818 Magnum XR Pump Kit – keeps rental fleets spraying while pros run ST Pro
  • BlueMax II 1/4″ x 50′ Hose – crush-proof braid, static-dissipative per Graco bulletin 334530

All parts qualify for combined-cart shipping—one freight fee, one tracking number.

Same-Day Ship & Real Humans on the Phone

Qualified Orders placed before 12 and your box leaves Graco warehouse to you the same day.

Ready to Slash Downtime & Boost Margins?

Add the OEM Graco 495ST ProB Lo-Boy Pump 243183 to your cart now and feel the difference when tomorrow’s first trigger pull lays down glass-smooth coverage—no spits, no stalls, just profit.

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