Mercedes Sprinter SR104 Rear Quarter Window Installation Guide
Published by VWD on Oct 2nd 2026
Mercedes Sprinter SR104 Passenger Side Rear Quarter Window Installation Guide
Step-by-step Mercedes-Benz Sprinter SR104 installation guide covering SR104-DS, SR104-F, and SR104-SE passenger-side rear quarter windows for 2007–2026 Sprinter 144" wheelbase vans.
Table of Contents
What Is the Mercedes Sprinter SR104 Window Position?
The SR104 window position is the passenger side rear quarter of the Mercedes-Benz Sprinter with the 144" wheelbase.
This is the rear body section behind the main passenger-side living or cargo area and ahead of the rear cargo door.
Mercedes Sprinter SR104 Fitment
Current Van Windows Direct fitment for the SR104 family is:
- Vehicle: Mercedes-Benz Sprinter Van
- Model Years: 2007–2026
- Wheelbase: 144"
- Roof Height: Low Roof or High Roof
- Position: Passenger Side Rear Quarter
The current overall size listed for the SR104 family is approximately 1631 mm x 705 mm, or roughly 64.21" x 27.76".
Available SR104 Window Models
SR104-DS Double-Sliding Window
The SR104-DS provides two independently sliding glass panels for excellent rear-cabin airflow and ventilation flexibility.
This design lets you open the front panel, rear panel, or both, depending on airflow needs. It also includes an integrated bug screen and privacy shade.
Current specifications list an opening size of up to approximately 14-1/2" wide x 15-7/8" high.
Shop SR104-DS Double-Sliding Window
SR104-F Fixed Glass Window
The SR104-F is the fixed-glass option for the passenger side rear quarter.
It provides a clean OE-style appearance with grey solar privacy glass and no moving window hardware.
Shop SR104-F Fixed Glass Window
SR104-SE SE-Series Sliding Window
The SR104-SE provides controlled rear-quarter ventilation with a clean all-glass exterior appearance and an integrated insect screen.
Current specifications list an opening size of approximately 552 mm x 451 mm, or roughly 21.75" x 17.75".
Tools and Materials Needed
- One-handed reciprocating saw, pneumatic air saw, or compact body saw
- Thin-metal automotive cutting blade
- Metal file or deburring tool
- Safety glasses
- Work gloves
- Vacuum
- Clean shop cloth
- Automotive primer or suitable urethane primer
- Trim-Lok edge molding
- Automotive glass urethane
- High-ratio urethane gun
- Window-support or masking tape
Mercedes Sprinter SR104 Rear Quarter Cutout Overview
The illustrated red line identifies the approximate inner sheet-metal area to remove from the Sprinter passenger-side rear-quarter panel.
Use the factory body stamping, the illustrated guide, and the actual SR104 window to verify the cut area.
After cutting, the exposed opening should be:
- Filed smooth
- Deburred
- Protected against corrosion
- Finished with Trim-Lok edge molding
- Cleaned thoroughly
- Dry-fit with the actual SR104 window before urethane is applied
Step-by-Step Mercedes Sprinter SR104 Window Installation
Step 1 — Verify the Passenger Side Rear Quarter Position
Confirm that you are working on the passenger side rear quarter of a 144" Sprinter.
Inspect the inside of the van for:
- Wiring
- Insulation
- Factory brackets
- Interior wall systems or panels
- Aftermarket accessories
Step 2 — Identify the Inner Sheet Metal to Remove
Use the factory-stamped panel and illustrated red line to identify the approximate inner sheet-metal area requiring removal.
Compare the intended cut area with the actual SR104 window before cutting.
Step 3 — Cut From Inside the Van When Possible
Whenever practical, cut from inside the van.
Working from the interior gives better visibility of the stamped structure and helps reduce the risk of damaging the exterior painted body surface.
Suitable cutting tools include:
- One-handed reciprocating saw
- Pneumatic air saw
- Compact automotive body saw
Use a blade intended for thin automotive steel and work slowly.
Step 4 — Remove the Cut Sheet-Metal Section
Once you've cut the required perimeter, carefully remove the unwanted inner sheet-metal section.
Inspect the opening for:
- Remaining metal tabs
- Sharp points
- Raised metal
- Saw burrs
- Irregular cut areas
Step 5 — File and Deburr the Opening
Use a metal file or deburring tool around the complete opening.
Remove sharp points, burrs, lifted edges, and high spots.
The finished edge should be smooth enough not to interfere with the window or Trim-Lok edge molding.
Step 6 — Protect the Raw Steel
Freshly cut automotive steel should not remain exposed.
Apply an appropriate corrosion-protection coating to the cut edge.
Suitable options may include:
- Automotive rattle-can primer
- Automotive touch-up primer
- Urethane-compatible primer where appropriate
Follow the primer manufacturer's specified dry or flash time.
Install Trim-Lok Edge Molding
After you cut, deburr, and protect the sheet-metal opening, install Trim-Lok edge molding over the finished edge.
Trim-Lok helps:
- Cover sharp cut edges
- Protect the finished sheet metal
- Improve the interior appearance
- Conceal small cutting irregularities
- Create a cleaner finished opening
Trim Reference: Use a close crop showing the Trim-Lok and sheet-metal interface so customers can clearly understand how the finished edge should look.
Step 7 — Clean the Rear Quarter Body Cavity
Vacuum the opening and surrounding body cavity thoroughly after cutting.
Remove all metal shavings before the window is installed.
Step 8 — Dry-Fit the SR104 Window
Before applying urethane, position the actual SR104-DS, SR104-F, or SR104-SE into the prepared opening.
Inspect the complete perimeter for proper clearance.
The window should sit naturally against the intended body surface without contacting unintended inner sheet metal.
If interference exists:
- Remove the window
- Identify the contact point
- Carefully adjust the opening
- File the new cut
- Re-prime exposed metal
- Reinstall edge molding where needed
- Dry-fit again
Urethane-Bonded SR104 Installation
SR104-DS, SR104-F, and SR104-SE all use urethane-bonded installation.
Prepare the body and glass bonding surfaces according to the requirements of the automotive urethane system being used.
This commonly includes:
- Cleaning the body bonding surface
- Cleaning the glass bonding surface
- Applying required body primer
- Applying glass primer when required
- Allowing proper flash time
Apply a continuous automotive glass urethane bead around the required bonding perimeter.
Avoid gaps, thin spots, and inconsistent bead height.
Step 9 — Install the SR104 Window
Carefully place the window into the prepared opening.
Apply even pressure around the perimeter so the urethane bead makes consistent contact.
Support or tape the window during curing according to the urethane manufacturer's instructions.
Do not drive the vehicle until the adhesive has reached the manufacturer's specified safe-drive-away time.
Common Mercedes Sprinter SR104 Installation Mistakes
Using the Wrong Body Position
SR104 is designed for the passenger side rear quarter of the 144" wheelbase Sprinter. Verify the actual body location before cutting.
Using the Wrong Wheelbase
SR104 is designed for the 144" wheelbase.
Cutting Too Much Sheet Metal
Remove only the amount of material required for proper window clearance.
Skipping the Dry Fit
Always dry-fit the actual SR104 window before applying urethane.
Leaving Burrs Around the Opening
File the entire cut perimeter before installing edge molding.
Leaving Bare Steel Exposed
Protect freshly cut steel with suitable automotive corrosion protection.
Leaving Metal Shavings Inside the Van Wall
Vacuum the body cavity thoroughly after cutting.
Shop Mercedes Sprinter SR104 Passenger Side Rear Quarter Windows
SR104-DS Double-Sliding Window
Shop SR104-DS
SR104-F Fixed Glass Window
Shop SR104-F
SR104-SE Sliding Window
Shop SR104-SE
Mercedes Sprinter SL104 Driver Side Rear Quarter Installation Guide
View SL104 Installation Guide
Van Window Installation Instructions
View Van Window Installation Instructions
Frequently Asked Questions
What position is SR104?
SR104 is the passenger side rear quarter position on the Mercedes-Benz Sprinter 144" wheelbase.
What Sprinter years does SR104 fit?
Current VWD listings specify 2007–2026 Mercedes-Benz Sprinter vans.
What wheelbase does SR104 fit?
SR104 is designed for the 144" wheelbase.
Which SR104 models are available?
Current VWD models include SR104-DS, SR104-F, and SR104-SE.
What size are SR104 windows?
Current SR104 product specifications list an overall size of approximately 1631 mm x 705 mm, or about 64.21" x 27.76".
Should freshly cut steel be primed?
Yes. Freshly exposed steel should receive suitable automotive corrosion protection.
Should Trim-Lok edge molding be installed?
Trim-Lok helps protect the cut edge and creates a cleaner interior finish.
Should the SR104 window be dry-fitted before urethane installation?
Yes. Always verify complete clearance and positioning before applying automotive glass urethane.
What adhesive is used for SR104 windows?
Current SR104 windows use a urethane-bonded installation with suitable automotive glass urethane.
Final Mercedes Sprinter SR104 Installation Notes
A proper SR104 installation requires careful preparation of the Sprinter passenger-side rear-quarter panel.
Verify the 144" wheelbase and body position, carefully cut the required sheet metal, file and protect the exposed edge, install Trim-Lok, clean the body cavity, dry-fit the actual window, and follow the urethane manufacturer's bonding and cure instructions.
Whether you choose the SR104-DS, SR104-F, or SR104-SE, always verify the actual Sprinter and exact window before making permanent modifications.