The Titan M-4 and M-8 mastic guns share a single 16-part diagram on our site, so the same part numbers apply to both. The main ones are the repair kit 2348175, the complete trigger 2333189, the gun housing 2343066, the handle sealing washer 0043303, the coarse filter 0089957 and the tip guards 0289228 and 661-027.
One diagram for two guns
Titan sells the M-4 and the M-8 as its mastic guns. Titan lists the same features for both: a straight line fluid passage built for maximum flow, an angled handle and lightweight metal construction. On AllTitanParts the two guns share one diagram, the M-4 / M-8 High Capacity Spray Gun Parts List, with 16 parts. You do not have to work out which gun a part belongs to: if it is on that page it is listed for both.
The two guns are identified by the Titan numbers 289013 (M-4) and 289014 (M-8). The M-8 is also sold with a different inlet fitting, so if you are not sure which gun you hold, read the model off the gun and have it ready before you order. This post is about parts only. The difference between the two guns is covered in a separate comparison.
Body and trigger
The housing and the trigger group are the structural parts of the gun. They rarely need replacing on their own, but when a trigger is cracked, bent or loose on its pin, this is the group to look at. The callout number is printed next to each part on the diagram page, so you can match the exploded drawing to the list.
Body and trigger parts
If the trigger part is what you came for, 2333189 is the complete trigger and the pins and guard are listed separately, so you can replace only the piece that is damaged. The diagram also lists a cover screw, 2339659, on the same page.
Springs, washer and the repair kit
Two pressure springs appear on the diagram: 2344878 at callout 3 and 0347335 at callout 3a. They share a callout position, so open the diagram page and compare it with the spring you removed before you choose one, or call us with the gun's model.
The handle sealing washer 0043303 (callout 13) is a small seal on the diagram. The M-4 / M-8 gun repair kit 2348175 sits at callout 4 and is the single item for a general rebuild. We do not list what is inside the kit, because Titan's kit contents are not something we can confirm from the information we hold. Ask our parts team on (713) 931-0006 whether the kit covers the part you are replacing, or order the single part when you already know which one has failed.
Filter parts
The gun filter catches debris before it reaches the tip. A partly blocked filter causes pressure loss and spitting, and it is the first thing to check before you suspect anything else. The diagram lists a coarse filter and two filter housings:
- 0089957, Gun Filter Coarse GREEN 2-pack, callout 14a. Titan's colour code puts green at 30 mesh, the coarse grade.
- 2347490, Filter Housing, callout 15.
- 2347492, Filter Housing, callout 15a.
The two housings are listed under separate callouts, 15 and 15a. We cannot tell you from the data we hold which one your gun uses, so match the one you removed against both before you order. A finer filter has to suit the coating you spray, so a thin coating may call for a different mesh from the coarse one. Our M-4 and M-8 mastic guns and accessories page lists what is offered for these guns.
Tip guards
Two tip guards are on this diagram, and they are not interchangeable in rating. Titan lists the 0289228 G-thread tip guard (callout 10) as its No Build Tip Guard, rated up to 5000 psi, and the 661-027 high pressure guard (callout 10a) up to 7700 psi.
The two tip guards on the M-4 / M-8 diagram
| Part | Callout | Titan's rating | Note |
|---|---|---|---|
| 0289228 | 10 | up to 5000 psi | G-thread guard, Titan's No Build guard |
| 661-027 | 10a | up to 7700 psi | High pressure guard |
Ratings are from Titan's tip guard page. Use only the guard your gun's manual calls for.
Ordering the right part
Identify the gun
Read the model off the gun: M-4 (Titan 289013) or M-8 (Titan 289014, also sold with another inlet fitting).
Open the diagram
Go to the parts list page and find the callout that matches the part you removed.
Check the neighbours
Where a callout has a twin (3 and 3a, 10 and 10a, 15 and 15a), compare both against the old part.
Add it to the cart
Use the part number, or open the product from the grid below. If a fit is uncertain, call (713) 931-0006 with the gun's model.
These are the main parts from the M-4 / M-8 diagram, with live pricing and Add to Cart.
The 16-part diagram with every callout.
The gun page for the two mastic guns.
Titan's tip guards and their ratings.
The short version
One diagram, 16 parts, both guns. Start from the callout, order the single part when you know what failed, and keep the repair kit 2348175 for a wider rebuild. Check the filter before anything else, and keep the tip guard rating in line with the rest of the system.
Not sure which M-series part you need?
Call (713) 931-0006 with the gun's model and the callout number, and our parts team will help you match it.
(713) 931-0006Order by Parts Diagram