The Graco TC Pro is the world's first cordless handheld airless sprayer — Triax Triple Piston Pump, DEWALT 20V MAX power, FlexLiner bags for any-angle spraying, and the ProConnect 3-step pump swap. Every OEM replacement part for TC Pro Corded, Cordless, and PLUS models, shipped same day from Houston, TX.
TC Pro Corded (17N163) · TC Pro Cordless (17N166) · TC Pro PLUS Cordless (17N223)
Genuine OEM replacement parts for the Graco TC Pro — corded, cordless, and PLUS models. Every part ships factory-sealed from Graco's authorized distribution chain.
When the TC Pro's Triax pump wears out, the 17P187 Triax Pump Assembly Replacement Kit drops in via the ProConnect system. No teardown, no special tools — just a single screwdriver:
The TC Pro family has three models: 17N163 (corded), 17N166 (cordless standard), and 17N223 (TC Pro PLUS — hot solvent compatible). All share the same Triax pump (17P187), front valve (17P174), and FlexLiner bags. Some motor and control components differ by model. Your model number is on the machine label. Not sure? Call 713-931-4102 — we'll confirm in under 2 minutes.
The TC Pro's Triax pump and FlexLiner system create unique failure modes not seen on any other Graco machine. Match your symptom to the right part before ordering.
The TC Pro uses TC Pro SwitchTips (TCP series) — not standard RAC X tips. The TCP514 (factory included) is a .014" orifice fine-finish tip designed for the TC Pro's 2,000 PSI Triax pump system. Standard RAC X tips (515, 517 etc.) from other Graco machines may physically fit but are not optimised for the TC Pro's lower pressure range and will produce inferior results.
| Part # | Description | Fits | Replace When |
|---|---|---|---|
| 17P187 | Triax Pump Assembly Replacement Kit | TC Pro Corded 17N163 · Cordless 17N166 · PLUS 17N223 | Pump worn · Won't prime · Pressure loss after front/outlet valve ruled out |
| 17P174 | Front Valve Kit | TC Pro 17N163/17N166 · Ultra 17M359 · Ultimate 17N162 · Note: PLUS uses 17P175 | Paint drips from tip when trigger released · Inconsistent spray cutoff |
| 17P183 | Triax Pump Outlet Valve Kit | TC Pro Corded · Cordless · TC Pro PLUS · Ultra · Ultimate | Primes fine — pressure collapses during spraying |
| 17P712 | VacuValve Cap Kit (3-pack) | TC Pro 17N163 · 17N166 · 17N223 · All FlexLiner models | Loses prime during angled/inverted spraying · FlexLiner won't maintain vacuum |
| TCP514 | TC Pro SwitchTip — .014" orifice · 10" fan | TC Pro all models — factory included tip | Fan collapses · Tip clogs repeatedly · Replace every 30–40 gallons |
| 17P574 | Tip Guard — TC Pro specific | TC Pro all models (different from Ultra/Ultimate guard 246215) | Guard cracked · Replace after any impact damage |
| 17F005 / 17A226 | FlexLiner Bags — 32 oz (17F005) · 42 oz (17A226, 3-pack) | TC Pro · Ultra · Ultimate · All FlexLiner Graco handheld sprayers | Bag torn or leaking · After every session (disposable) or reuse 3–5× |
| 17P111 | DC Motor Kit | TC Pro Cordless 17N166 · TC Pro PLUS 17N223 | Motor runs slowly · Inconsistent power · Fails to start despite charged battery |
| 17P235 | Clamshell Door Kit — DC Blue | TC Pro all models | Clamshell door cracked or damaged · Required for ProConnect pump access |
| 17M882 | Prime / Spray Valve Knob | TC Pro · Ultra · Ultimate handheld models | Knob stiff or broken · Machine won't switch between PRIME and SPRAY |
The VacuValve cap (17P712) is the small valve that maintains vacuum in the FlexLiner bag, allowing the TC Pro to spray in any direction — including upside down. When the VacuValve is dirty, worn, or not seated correctly, the machine loses prime during angled spraying. This is almost always misdiagnosed as a pump problem. Before ordering a pump assembly, clean and inspect the VacuValve cap first. If cleaning doesn't restore upside-down spraying performance, replace the cap — it costs a fraction of a pump assembly and solves the problem in 80% of cases.
| Tip Code | Fan Width | Best For | Compatibility |
|---|---|---|---|
| TCP514 ⭐ | 10" | Interior walls, ceilings, doors — factory included | TC Pro only |
| TCP412 | 8" | Trim, railings, shutters, narrow surfaces | TC Pro only |
| TCP210 | 4" | Detail work, touch-ups, cabinet edges | TC Pro only |
| FFLP514 | 10" | Fine finish — ultra-smooth on doors and trim | TC Pro + Ultra + Ultimate |
| FFLP310 | 6" | Fine finish — cabinetry, furniture, narrow surfaces | TC Pro + Ultra + Ultimate |
All three share the same pump, valves, and FlexLiner system. The differences are in power source and material compatibility.
Authorized Graco dealer since 2010
All parts come directly from Graco with full manufacturer warranty. We never sell aftermarket substitutes or knock-off components that void your warranty.
Genuine Graco parts in our warehouse ready to ship. Same-day shipping on qualifying orders placed before 1pm CST, Monday–Friday.
Our team knows the TC Pro's Triax pump and FlexLiner system inside out. We'll identify the right part for your specific model and troubleshoot any issue.
We stock the 17P187 Triax pump assembly and all ProConnect components for TC Pro. The 3-step pump swap is the fastest repair on any Graco machine — we'll walk you through it.
Best prices on genuine Graco TC Pro parts. FlexLiner bags, TCP tips, and VacuValve caps available individually or in multi-packs at contractor pricing.
30-day return policy on all parts in new, unused condition. Order the wrong component? No problem. Returns are simple and fast.
Common questions about Graco TC Pro parts, the Triax pump, and FlexLiner system
