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Toll Free (888) 743-7727

35111 Lodge Rd.
Tollhouse, California 93667

Monday-Friday 8AM-4PM (PST)


If you would like to share your experience with www.rvpartssierra.com we would love to hear from you too!  Please visit our comments page and let us know how you feel about our product, service or website.


Sandy- Fender skirt arrived today perfect fit and match. I’ll be sure to let anyone needing a replacement for their Teton to contact you first.
Thanks, Paul S. 12/4/18
We purchased a fiberglass shower toilet combination base #360 for an 1958 Airstream renovation.  Service was very friendly, fast, price was excellent.  Received the part quickly and it is excellent!  We are very happy. 
Harold S. 11/27/18 
Thank you for the awesome service and product. So much better than the original plastic ones. Just wanted to thank you for the quick turnaround and delivery. Actually received them a couple of days ago. Anyway have a great tomorrow and an great weekend.
Richard C. 11/16/18
When our shower was totaled by a blow out from a rear tire I thought we would be without a shower for the rest of our ownership.  I went on the internet to see what I could find.  The firs site I found was Sierra.  When I called them they said they had the exact shower pan I needed.  I ordered it, received it, installed it and returned our shower to operation.  The price was good, and delivery was quick.  Thank you for your help.
Michael W. 10/8/18 
I ordered fender skirts for a 1999 5th wheel.  These are so much nicer than the flimsy originals! Arrived in a timely manner and were well packaged.  Thanks for a job well done. 
Linda R. 10/7/18 
The fenders I got for my Holiday Rambler fit absolutely perfect and look great.  I will tell all my RV companions  about you. They look better than the original one  ever did. 100% happy!
R.S. 9/9/18

I just wanted to let you folks know that I received the fender skirts.  They were perfect and impressed with the quality of the skirts and the way you handled my order.  In the future you will have my business if I ever need another replacement.  I will also let my fellow RVers  of your quality of work.
Ben S. 8/29/18
Fit and finish is impeccable! No trimming needed, just recommend you pre-drill holes for screws since self tapping screws might crack it if they flare to much.  A much stronger and higher quality part than OEM for half the price.
Ivan 7/23/18
Kristen was especially helpful in locating fender skirts for my older model Sunnybrook Travel Trailer. It was refreshing to speak with someone that was personable and knowledgeable.  She was prompt in sending the detailed description and final invoice. Kudos to Kristen.
T. F. 7/13/18

I got all the trim parts you sent . They are very high quality and look like a perfect fit (bumper, wheel well, rear edge,and top cap trim) Thank you for the great job. I have told several people and my local RV center about how you can supply parts difficult to find. Keep up the good work! 
M.W. 6/21/18 

When it came to replacing 10 year old disintegrating large plastic rear cap on my toy hauler, Sierra Engineering to the rescue! 1/3 of the OEM cost for a product that is so much sturdier and of much higher quality than OEM! And not just that. We had a camping trip planned for bext weekend. Phoned them on a Friday and received a call on Tuesday that part is finished! Unbeatable customer service!

Ivan S. 6/18/18 
Wow these fender skirts are Great! They arrived today and in perfect shape. Thanks for all those FRAGILE stickers on the package. Not one dent or ding in the box anywhere! You packing and UPS shipping is the best! Worth every penny. Very heavy duty. Much heavier duty fiberglass then what I envisioned. Great job everyone there. Thank you!
Matthew M. 5/21/18 

I searched for days for this item and just when I was going to give up I found your company , I am a happy camper now lol thank you and I will be a good customer have a great day !!

Michael G. 5/4/18 


Received the fender skirt today, exact match Thank You for a great product! 

-Duane W. 5/3/18


Thank you for the fender, looks and fits great, now if I can find some original decals, my Komfort will look much better.
Thanks again,

-Chris H. 11/14/17


I ordered two #1023 skirts for my 2007 Next Level knowing my dimensions were off just a fraction from the information on your website. I figured that if your skirt had 23 screw holes and my skirt had 23 holes it's got to be close enough. The skirts fit great and look great. I'm very happy I went with a quality fiberglass skirt rather than plastic. 

-Mike V. 9/18/17 


I really appreciate you and your company for getting the rear top cap for my Monterey RV made and shipped so quickly. It arrived in excellent condition in the good packaging. It looks great and is impressibly finished with the edges ground smooth. It is much better than the original. I haven't installed it yet and hope I can do it justice. 
I'm happy with your service, but I can't believe UPS took so long to deliver it. Wonder if they routed it through China on a slow boat? 
Thanks again for your effort and product. Take care. 
H 8/31/17 

I am an owner of an old vintage 1976 Komfort camper.
Everything works beautifully in it, the old AC, fridge, all still works,
It sadly had its fender skirt torn off.
Komfort is not even in business anymore, they are now another company,
and when I called them, they have nothing for these lovely old campers.
There are other companies that make fender skirts,
but I could not find anyone who made exact replicas of the original.
The original had a big old letter "K" on it.
Sierra was the only one we could find who makes one.
They took my order, and did not bill me until they shipped the order.
They made a custom fender skirt, for a very reasonable price,
shipped it beautifully, all within around two weeks.
The girl on the phone was kind and professional.
Well done Sierra.
When I saw the fender skirt arrive, I almost could not believe I was looking at it.



Ok so I ordered a tub after Sandy brilliantly found a perfect match for my 1998 Terry 5th wheel. It shipped via UPS. When it got here I was so excited! Then I opened the box...The tub was damaged during shipping. I was disappointed but...Then I got an email from Kristen. These two ladies are awesome! Kristen got the ball rolling immediately to get a replacement to me as fast as possible. UPS has once again dropped the ball and the tub is lost in a main hub...Geezo! Moral of the story....Sandy and Kristen make Sierra Engineering my go-to for hard to find RV parts! If they can't find it, make it, or substitute it, it doesn't exist! Love this company!
Shannon M. 5/26/17 
Thank you for the perfect fit.  I ordered a fender skirt for my 2000 Fleetwood storm.  Great price and helpful customer service
DT 5/4/17  
If you have hard to find RV part I would recommend Sierra Engineering Company to anyone. Don't waste your time shopping anywhere else, you will just be disappointed. You can count on these folks. I called after ordering parts from another big company on the internet that sold me the wrong parts. After calling Sierra and talking to one person on the phone I was able to identify exactly what I needed within little time.  They made my customer experience as good as it gets.
Awesome service!
Forever Grateful Customer
Thanks for the great fenders.  Very much better then originals . Fit was real good, just a small amount of trimming to do.  I will recommend your company any time.  You all have a great Christmas.
GC 12/16/16 
Sandy, The wheel skirts for my Holiday Rambler 5th wheel arrived yesterday in good shape.  Thanks for your prompt response.
Phil A. 9/9/16 

Received the skirt today fits excellent match of original...

Mr. Robertson 9/6/16  

Ordered a replacement fender for my 2009 Fleetwood Backpack trailer.  It arrived yesterday and is a perfect match to the original.

Brian S. 10/16/15

We LOVE Sierra Engineering! Sandy knows parts off the top of her head and anything she doesn't know in seconds, she researches and has an answer in minutes! No where else to go but Sierra Engineering!

 Patty G. 10/15/15

I have ordered 20 or more fenders from Sierra and even had ones custom made. I have never had a problem. Kristen is always prompt and gives me many options even when I don't know what I am looking for!

Billy 10/14/15 

Just to let you know, I received my part #108 skirt 8/17/15 in good shape fits nice, thank you for all your help.

Dave 8/18/15 

Dead on duplicate of the original from my 1973 Cavalier. Great quality with respect to material and workmanship. Fast delivery and great  catalog making it easy to identify and order,  Thanks

Bill O. 8/18/15 

The color and fit were a perfect match.  Your company did a great job.  Tell all of your people how nice it is to work with a company that delivers a quality product.

Dave P. 8/1/15 

Thank you for the great product and service.

LL 6/16/15 

Got my fender flares! Very nice, they look factory! Thank you!!

Jeff T 4/10/15 

Thank you the UPS driver just delivered it. I am very pleased with the quality of the items you sent.

D.R. 2/21/15

finish of these skirts is second to none. Very helpful and friendly staff. Thanks for all your help and a great product!

J.H.- Tollhouse, CA 2/19/15 

Absolutely perfect!  Wonderful fit, and even more wonderful customer service.  Couldn't be happier with the quality, fit and ease of installation.  Now my fenders are nicer than my trailer!

A.- Visalia, CA 2/19/15 

My order arrived today and I am THRILLED !!!  It is a perfect match, AND way better than the original....  Thank you very much !

T.M. Salem, OR 1/30/15 


The skirts have been received and installed. They fit perfectly and are excellent quality. I want to thank you and Sierra Engineering for quality products and excellent customer service.

Ed 11/6/14 

DEAR KRISTEN . i just had to write to you and tell you how very pleased i am with the fender skirt the shipping was fast the packaging was excellent  no damage at all the skirt fits perfect except for one wrap around which i can easily dress down so if its not on your list of applications you can include it  once once again   i am very very pleased and impressed  so THANK YOU.

Paul 11/4/14 

Thank you.   The new fender is a quality product.  I have installed it and I am very impressed with the workmanship that made it an easy instillation. 
 Tom P. 10/7/14 

Dear Susan   Wanted to thank you so much for all your help with this order-I search for a replacement wheel well moulding for our Shasta Cheyenne motor home (2000) and came up with this/fits like a glove.  Was a real pleasure working with your company!   thanks again,

S. S. 9/4/14 

I just received a #708 Single Skirts for Seaview by National 1998 and it's an exact fit and really good quality. My Seaview is a year 2000 and I am sure the the #708 will fit the 1999 as well so you may want to add that to the description. Also for those who have units with the medium blue gray doors and skirts I am using a Benjamin Moore acrylic latex custom mixed paint. Matches perfectly. Also am using a foam type brush because the texture hides all strokes.

John 9/2/14

I bought one of these for my 1977 Prowler 5th wheel, after thinking I was never going to find one, and it is an exact replacement. It is actually much heaver made than the original! I'm can't say enough good things about how pleased I am with the tub and the great service I received from Sierra's staff. I'm glad there's some that still makes parts for these old campers so now my kids can continue to grow up in the same camper I did. You guys really made my season!

Ed 9/1/14 

I wanted to take a minute to thank you for the incredible service.  We needed a special pan to mount our cassette toilet.  Your shower pan is exactly what I needed and the quality is fantastic. 

MW 8/28/14 

Kristen I am so glad I found your site. It's the right fender skirt I needed, thank you much. I will be a repeat customer for sure.

K.M. 8/20/14 

Like I said on the phone.  The fenderskirt that I received from you  looks so much nicer and is much more durable than the one that came on my Montana Mountaineer, that I wanted to replace the other one with the same high quality product!  It really makes the original fenderskirt look cheap. I am spreading the word here at work as to how you have a really good product.  Hopefully we can get you some more business.

Thanks again,
Tom   7/30/14 

I wanted to take a minute to thank you for the incredible service.  We needed a special pan to mount our cassette toilet.  Your shower pan is exactly what I needed and the quality is fantastic. 

MW 7/20/14 

I have received this afternoon the fender skirt #110 and it is the exact one I needed.
Thank you,


Audra, Thank you for taking the time with me on the phone this morning to establish an account. You are a delight to work with. Hope to do much business with you in the future.

G.T. 6/25/14 

Just called and ordered #907. You have been so much easier to deal with than other companies.

Kevin M.

"I just received and unpacked my skirts I had ordered for my old trailer and the fender skirts are the exact match to what was on there. Would like to thank you for exceptional quality and service in getting these parts made and sent to me. Ordered, manufactured, shipped and installed all within 2 weeks. Fantastic. Thank you again I will definitely recommend you to everyone I know."

Thanks -G.B. 

"Thank-you for the new skirts for my trailer, they fit perfectly. I appreciate how quick they got here and all in one piece."

Sincerely, Howard W 

"Just wanted to say these are super nice."

Thanks. Randy K.

"I want to thank everyone for working so hard on this for us. We were faxed over a couple options this afternoon and we went with 913. I am extremely appreciative for all your efforts"

Thanks. Billy D. 

"Thank you for the outstanding service on my recent order. The quality is great, and the prompt delivery is much appreciated. Thanks to the two ladies who helped in taking and shipping my order."


"Susan, I got the fender skirts and installed them. They look fantastic, thanks!"


"Your replacement bumper ends fit perfectly. For a coach that is 24 years old, it was amazing to find such a perfect product. Thanks, and keep up the quality work"

Kenneth  W. / 12-19-2012 

"They worked out great, thanks"

Andrew 8/8/2012 

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