Graco 17J877 Inlet Housing Kit Fits Prox21

Name: Graco 17J877 Inlet Housing Kit Fits Prox21
Brand: Graco
SKU: 17J877
Price: 69.47 USD
Availability: InStock

Graco 17J877 Inlet Housing Kit – Fits ProX21 Airless Sprayers and other similar sprayers

A ProX21 that refuses to prime is more than an inconvenience—it halts production and chews up labor dollars. The culprit is usually a hairline crack or worn seat inside the inlet body. Slide in the Graco 17J877 Inlet Housing Kit and your sprayer snaps back to full suction in minutes. Because the kit is a Genuine Graco parts solution, you get precision machining, solvent-proof seals, and the confidence that comes only from a Graco part factory.

What Makes 17J877 the Smart Fix?

Instant, reliable priming. A new seat and check ball create an airtight seal so paint flows at the first squeeze of the trigger.
Pump-saving build. Tight threads and hard-anodized metal block air intrusion—preventing cavitation that destroys packings.
Chemical stamina. Nitrile and PTFE rings stand up to today’s solvent blends and high-solids coatings.
Warranty peace of mind. Installing genuine parts keeps your SmartControl system eligible for all factory support.

Retail Price: $75.75

You save: $6.28 (8.29%)

Our Price: $69.47

Based on 0 reviews

5 ★

4 ★

3 ★

2 ★

1 ★

Description

Spot the Signs You Need an Inlet Swap

Not sure if 17J877 is the cure? These red flags say yes:

Sprayer takes more than 30 seconds to prime or never fully primes.
Bubbles appear in the inlet tube while spraying.
Pressure spikes and drops at the gun—especially when running thin materials.
Visible scoring, stripped threads, or cracking on the inlet casting.

Replace the inlet and those symptoms vanish—eliminating the need for costly pump rebuilds down the road.

Everything Inside the Kit

The blister pack ships with:

Aluminum inlet housing body (pre-tapped for ProX series)
Hardened stainless check ball and seat
Nitrile O-ring and PTFE back-up ring
Spring, retainer, and torque spec card

Designed specifically for the ProX21 sprayer parts family, the kit drops straight into the SmartControl pump block without shims or adapters. Running a ProX17 or ProX19? Browse our ProX21 diagram section or call us— we’ll match your serial to the correct inlet body.

Five-Step DIY Installation

Flush & de-pressurize. Trigger off pressure and cycle water or solvent until clear.
Remove the inlet tube. Back the hose off the old housing with a wrench.
Unscrew the worn body. Keep the original ball for comparison.
Thread-seal & tighten. Apply fresh PTFE tape, then torque the new housing to spec.
Prime & verify. Your sprayer should pull paint in 10 seconds or less—no bubbles, no surging.

Need extra insurance? Add a Graco pump inlet kit or new Graco suction tube assembly for a complete fluid-section refresh.

Related Upgrades Pros Often Bundle

Issue Solved	Quick Link
Suction air leaks	Graco inlet valve upgrade
Slow material flow	airless paint sprayer suction repair
Need a stand-by sprayer	buy Graco OEM

The Sprayers & Parts Edge

Same-day dispatch. Orders with parts in-stock before 1 PM CST leave our central warehouse today.
48-hour delivery zone. Most U.S. jobsites receive parts within two business days.
Real techs on call. Our crew lives and breathes ProX pumps—ask anything.
Secure checkout. PCI-compliant processing keeps data safe while you stock up on OEM Graco replacement parts.

Questions? We’ve Got Answers.

Snap a photo of your fluid section and email it—our technicians will highlight the exact part you need. Prefer to talk? Call us and experience the zero-hold service that makes Sprayers & Parts the first stop for ProX21 sprayer parts.