Product Description
Buick LaCrosse 2005-2009 Lower Kit, 3.5" Wide, 8 Pieces (TH45520)
TH45520 is the narrower of two Lower Kits linked for the Buick LaCrosse four-door sedan, 2005-2009. It's eight polished stainless steel pieces, 3.5" wide, that "Spans from the bottom of the door UP to the specified width."
3.5" or 6"?
The LaCrosse has two Lower Kits with the same note, the same piece count and the same years. TH45520 is 3.5". TH45521 is 6". The record doesn't explain what sets them apart beyond width, such as trim level or molding. So measure: from the bottom edge of each door up to the lowest feature above it (molding or a body line). Then compare with the two widths. If neither clearly fits, or both do, call 877-752-3811.
Eight pieces, four doors
The count is double the door count, but the data doesn't say how the pieces divide. Sort them with the product photos and label each liner.
Bottom edges first
The steel lines up with the door's lower edge. Open each door and check that edge for chips, dents or rust, and fix anything you find.
Material
Buick's 2005-2009 LaCrosse takes eight 3.5" strips of USA-made polished 26 gauge 304 stainless steel, rising from the door bottom on 3M automotive-grade acrylic foam tape over the existing surface. Per QAA, the tape will hold for a lifetime without harming the sedan.
Prep
Wash, rinse and dry the lower doors. Wipe a band a little taller than 3.5" with isopropyl alcohol.
Installation
- Dry-fit each piece with painter's tape and check it with the door shut.
- Peel a few inches of liner and set the end flush with the bottom edge.
- Press along as the liner comes out, then press firmly overall.
Line across the gaps
Each door's top edge should meet the next at the same height. Check across the gaps from a few feet back.
Linked LaCrosse parts
DS45520 door sill trim, PP45520 / PP45521 / PP45522 pillar post kits, RD45520 rear deck accent at 3.5", RI45520 roof insert trim, and WZ45520 wheel well fender trim molding.
After
Open and close each door a few times to check clearance. Wait a day before washing.
Care
Mild soap and a soft cloth. Skip abrasive pads.
Install conditions
Install the LaCrosse in dry, mild weather or a garage.
Helper
Someone holding the far end of a piece keeps it off the paint while you align the bottom edge.
What to send when you call
Your measurement from the bottom of the door up to the first feature, and a photo of a whole side.
Why measure first
With two kits that differ only in width, measuring is the whole decision. Hold a tape measure at the bottom edge of the front door and read up to the first raised feature; repeat on the rear door. Write both numbers down. If they are close to three and a half inches, this is the kit to consider. If they are much taller, look at TH45521, or call.
Mock it up
Painter's tape at 3.5" shows the finished look before you buy.
2005-2009 LaCrosse kit TH45520 has UPC 691821342976; Quality Automotive Trims answers at 877-752-3811.
TH45520 specifications
| Brand | QAA |
|---|---|
| Part number (MPN) | TH45520 |
| UPC | 691821342976 |
| Part type | Rocker Panel Trim, Lower Kit |
| Pieces in kit | 8 |
| Material | Polished 26-gauge 304 stainless steel |
| Finish | Polished to a mirror shine |
| Width | 3.5" |
| Coverage / notes | Spans from the bottom of the door UP to the specified width |
| Mounting | 3M automotive-grade acrylic foam tape; installs directly over the existing surface |
| Origin | Made in the USA |
| Fits | 2005-2009 Buick LaCrosse |
Fitment: TH45520
| Vehicle | Years | Body style |
|---|---|---|
| Buick LaCrosse | 2005-2009 | 4-door, Sedan |
Fitment is listed exactly as QAA catalogs it. Confirm the body style as well as the year and model. Questions? Call Quality Automotive Trims at 877-752-3811 with your year, make, model, and body style.
Other QAA trim cataloged for the 2005-2009 Buick LaCrosse
- DS45520: 2-piece Door Sill trim
- PP45520: 4-piece Pillar Post Trim
- PP45521: 6-piece Pillar Post Trim
- PP45522: 8-piece Pillar Post Trim
- RD45520: 1-piece Rear Deck Accent
- RI45520: 2-piece Roof Insert Trim
- TH45521: 8-piece Rocker Panel Trim, Lower Kit
- WZ45520: 4-piece Wheel Well Fender Trim Molding
Check the body style on each listing; some kits are specific to one body style.
Installation tips: Rocker Panel Trim, Lower Kit
- Unpack all 8 pieces and match each one to its position on the vehicle, using the product photos, before fitting any of them.
- Each piece mounts with 3M automotive-grade acrylic foam tape, so clean and dry the mounting surface first; the tape needs paint or trim free of dirt and wax.
- Align the piece and press it firmly into place directly over the existing surface, working along its full length so the tape bonds evenly.
- Fit one piece at a time and compare each with the product photos and the pieces already in place.
These are general tips. Follow any instructions packed with your kit if they differ.
FAQ: TH45520 Rocker Panel Trim, Lower Kit
What does TH45520 fit?
The Buick LaCrosse four-door sedan, 2005-2009.
How wide is it?
3.5", spanning up from the bottom of the door.
What's the difference from TH45521?
TH45521 is 6" wide. Both have eight pieces. Measure your doors or call 877-752-3811.
How many pieces?
Eight.
