RAM ProMaster RR305-F Passenger Side Rear Quarter Window Installation Guide

Complete step-by-step installation guide for the VWD RR305-F fixed glass window in the passenger side rear quarter of compatible 2014–2026 RAM ProMaster 136" wheelbase vans.

What Is the RAM ProMaster RR305-F Window Position?

The RR305-F installs in the passenger side rear quarter position of the RAM ProMaster 136" wheelbase van.

This is the rear side body panel on the passenger side, behind the sliding door area and ahead of the rear cargo doors.

RAM ProMaster RR305-F Fitment & Dimensions

Current Van Windows Direct fitment for RR305-F is:

• Vehicle: RAM ProMaster Van
• Model Years: 2014–2026
• Wheelbase: 136"
• Roof Height: Low Roof or High Roof
• Window Position: Passenger Side Rear Quarter
• Window Type: Solid Fixed Glass OE-Style Window

Current overall dimensions are approximately 1507 mm x 586 mm, or roughly 60.71" x 23.07".

The RR305-F uses grey solar privacy glass, tempered automotive safety glass, and a urethane-bonded installation.

Shop RR305-F Passenger Side Rear Quarter Fixed Glass Window

Tools & 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 rattle-can primer or suitable urethane primer
• Trim-Lok edge molding
• Automotive glass urethane
• High-ratio urethane gun
• Window securing tape
• Window bumper spacers if required by your installation method

RAM ProMaster RR305 Passenger Side Rear Quarter Cutout Overview

The illustrated red line identifies the approximate inner stamped sheet-metal area that must be removed from the ProMaster passenger side rear-quarter panel.

The ProMaster factory stamping provides the main visual reference. Use the illustrated guide together with the actual RR305-F window before making any permanent cut.

After the sheet metal has been removed, the opening should be:

1. Filed smooth
2. Deburred
3. Protected from corrosion
4. Finished with Trim-Lok edge molding
5. Vacuumed and cleaned thoroughly
6. Dry-fit with the actual RR305-F before automotive urethane is applied

Step-by-Step RAM ProMaster RR305-F Window Installation

Step 1 — Verify the Passenger Side Rear Quarter Position

Confirm that you are working on the passenger side rear quarter panel of a 136" wheelbase RAM ProMaster.

Before cutting, inspect the inside of the van wall for:

• Electrical wiring
• Factory brackets
• Insulation
• Interior wall systems
• HVAC components
• Aftermarket accessories

Step 2 — Identify the Inner Sheet Metal to Remove

Use the factory stamped body opening and illustrated red cut line to identify the approximate inner sheet-metal section that must be removed.

Compare the intended opening with the actual RR305-F window before making the first cut.

Step 3 — Cut From Inside the Van When Possible

Whenever practical, perform the cutting operation from inside the ProMaster.

Cutting from inside gives you a direct view of the factory stamping and helps reduce the chance of damaging the exterior body surface.

Suitable tools include:

• One-handed reciprocating saw
• Pneumatic air saw
• Compact automotive body saw

Use a blade intended for thin automotive steel and work slowly with controlled cuts.

Step 4 — Remove the Cut Sheet-Metal Section

Once the complete perimeter is cut, carefully remove the unwanted inner sheet-metal section.

Inspect the opening for:

• Remaining metal tabs
• Saw burrs
• Sharp corners
• Raised sheet metal
• Irregular cutting areas

Step 5 — File and Deburr the Opening

Use a metal file or deburring tool around the complete cut perimeter.

Remove all burrs, lifted edges, sharp points, and high spots.

The finished edge should be smooth enough that the Trim-Lok molding can seat fully without being pushed outward by uneven or raised metal.

Step 6 — Prime and Protect the Freshly Cut Steel

Freshly exposed automotive steel should not remain unprotected.

Apply suitable corrosion protection to all raw steel created by the cut.

Suitable options may include:

• Automotive rattle-can primer
• Automotive touch-up primer
• Urethane-compatible primer where appropriate

Follow the primer manufacturer's required flash or drying time before moving on.

Install Trim-Lok Edge Molding

Once the opening has been cut, filed, deburred, and protected, install Trim-Lok edge molding around the finished sheet-metal perimeter.

Trim-Lok helps:

• Cover exposed sheet-metal edges
• Protect against sharp cut steel
• Improve the finished interior appearance
• Conceal minor cutting irregularities
• Create a more professional finished opening

VWD offers a Trim-Lok edge molding specifically sized for the ProMaster passenger side rear quarter on the 136" wheelbase.

Shop ProMaster Trim-Lok Edge Molding

Step 7 — Clean the Rear Quarter Body Cavity

Vacuum the opening and surrounding wall cavity thoroughly after cutting.

Loose metal fragments can eventually rust or create debris inside the van wall, so remove all shavings before final installation.

Step 8 — Dry-Fit the RR305-F Window

Before opening the urethane, place the actual RR305-F into the prepared opening.

Inspect the complete perimeter for clearance.

The window should sit naturally against the intended exterior bonding surface without being forced against remaining inner sheet metal.

If interference is found:

1. Remove the window
2. Identify the interference point
3. Carefully adjust the opening
4. File and deburr the adjusted area
5. Re-prime freshly exposed steel
6. Reinstall Trim-Lok where necessary
7. Dry-fit the window again

Urethane-Bonded RR305-F Installation

The RR305-F uses a urethane-bonded installation.

Prepare the vehicle and glass bonding surfaces according to the requirements of the automotive urethane system being used.

Preparation commonly includes:

• Cleaning the vehicle bonding surface
• Cleaning the glass bonding surface
• Applying required body primer
• Applying glass primer where specified
• Allowing the correct primer flash time

Apply a continuous automotive glass urethane bead around the required bonding perimeter.

Avoid gaps, thin spots, or inconsistent bead height.

A high-ratio caulking gun is recommended because automotive glass urethane is considerably thicker than ordinary household sealant.

Step 9 — Set the RR305-F Window

Carefully position the RR305-F into the prepared rear-quarter opening.

Apply even pressure around the perimeter so the urethane makes consistent contact.

Tape or support the window during the cure period according to the urethane manufacturer's instructions.

Do not drive the vehicle until the urethane has reached the manufacturer's specified safe-drive-away time.

Common RAM ProMaster RR305-F Installation Mistakes

Confusing the 136" Rear Quarter With Other ProMaster Positions

RR305-F is specifically the passenger side rear quarter window for the 136" wheelbase. Verify the vehicle configuration before cutting.

Cutting Before Having the Actual Window

Always have the RR305-F available and physically verify the opening before making permanent cuts.

Cutting Too Much Sheet Metal

Remove only the material necessary for correct clearance. It is easier to carefully enlarge an opening after a dry fit than to repair an oversized cut.

Skipping the Dry Fit

Always dry-fit the RR305-F before applying automotive urethane.

Leaving Burrs or Raised Metal

File and deburr the complete cut perimeter before installing Trim-Lok.

Leaving Fresh Steel Unprotected

Prime or otherwise protect all freshly exposed steel before final installation.

Leaving Metal Shavings Inside the Van Wall

Vacuum the rear-quarter cavity thoroughly after cutting.

Using Household Caulk Instead of Automotive Urethane

RR305-F is designed for a urethane-bonded automotive glass installation.

Shop RR305-F & Installation Accessories

Frequently Asked Questions

What position is RR305-F?

RR305-F is the passenger side rear quarter window position on the RAM ProMaster 136" wheelbase.

What years does RR305-F fit?

Current Van Windows Direct fitment covers 2014–2026 RAM ProMaster vans.

What wheelbase does RR305-F fit?

RR305-F is designed for the 136" wheelbase.

Does RR305-F fit Low Roof and High Roof ProMaster vans?

Yes. Current product fitment lists both Low Roof and High Roof configurations.

What size is RR305-F?

Current dimensions are approximately 1507 mm x 586 mm, or roughly 60.71" x 23.07".

Is RR305-F fixed or opening glass?

RR305-F is a solid fixed glass OE-style window with no opening vent section.

Should freshly cut steel be primed?

Yes. Freshly exposed steel should receive suitable automotive corrosion protection before final installation.

Should Trim-Lok edge molding be installed?

Trim-Lok helps cover and protect the cut sheet-metal edge while providing a cleaner interior finish.

Should RR305-F be dry-fitted before applying urethane?

Yes. Always verify the complete window position and clearance before applying automotive glass urethane.

What adhesive is used for RR305-F?

RR305-F uses a urethane-bonded installation with suitable automotive glass urethane.

Final RAM ProMaster RR305-F Installation Notes

A clean RR305-F installation starts with correctly identifying and preparing the passenger side rear-quarter opening on the 136" wheelbase ProMaster.

Verify the actual vehicle and window, carefully remove only the required inner sheet metal, file and protect the exposed steel, install Trim-Lok, remove all metal debris, dry-fit the RR305-F, and then complete the urethane-bonded installation according to the adhesive manufacturer's instructions.

Always verify the actual ProMaster and exact RR305-F window before making permanent vehicle modifications.