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Boundary Nissan RB26 MartenWear Treated Billet Oil Pump Gear (Fits OEM Housing 81mm)

Marsoni M251S
Sale price$199.50
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Get it in 3 business days with 1 day shipping. Friday, May 29
Boundary Nissan RB26 MartenWear Treated Billet Oil Pump Gear (Fits OEM Housing 81mm)SKU: RB26 81 OPG M Boundary Nissan RB26 MartenWear Treated Billet Oil Pump Gear (Fits OEM Housing 81mm) The RB26 OPG throws away the weak asymmetrical rotor design and replaces it with Boundarys own race inspired symmetrical gear pattern. It is designed to be tighter sealing and created to be a higher volume so it will have a slight uptick in idle pressure and mid range pressure up to the relief valve limit. It also has the designed crankshaft
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.7 ★★★★★
Based on 473 reviews
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Dae
Massapequa, US
★★★★★ 5
Good material. Not too thin and it's rigid
Size: Small, Color: Black Red
Perfect. I'm 5'9 skinny dude and I normally wear a size medium. I took back the medium and got a small and it fits me perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
A
Verified Purchase
Amazon Customer
Los Angeles, US
★★★★★ 4
Runs Small
Size: X-Large, Color: Black_a
I own several embroidered Western shirts by known manufacturers, including one purchased on Amazon. All are XL, and they fit fine. So I ordered XL on this shirt. I can wear it, but it's not a good fit or very comfortable. Specifically, it is a very slim cut - much slimmer than the dimensions given in the description state. So if you are a slim guy, no problem - order your usual size. If you are stocky, as I am, go up a size. In every other way, I really love the shirt - beautiful embroidery, very nicely made. I love the contrasting colors inside the collar and placket (inside of the snaps). I have re-ordered in XXL and hope and think this will fit fine. Not to figure out how to return this from the Philippines....
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 30, 2023
J
Verified Purchase
Joseph roginski
Phoenix, US
★★★★★ 5
EL PIONEER FLORAL AND HORSESHOE EMBROIDERY
Size: Large, Color: Black_a
EXCELLENT FIT EXCELLENT LOOK WOULD HIGHLY RECOMMEND TO ANYONE WHO LIKES THE COWBOY LOOK ALSO EXCELLENT CHOICE OF COLORS🤠🤠🤠🤠
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026
S
Verified Purchase
SJ /Teefy
San Leandro, US
★★★★★ 1
Bleeds!
Size: Small, Color: Black Green
FABRIC BLEEDS! I washed this before wearing it and one more time- then I washed it with some other items and it STAINED IT AND COMPLETELY RUINED IT! Quality is terrible! Fabric is THIN! Do NOT waste your money! And yes I did wash as directed by the manufacturer.
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Reviewed in the United States on May 11, 2026
C
Verified Purchase
Clay Lee Little
Phoenix, US
★★★★★ 5
Nice Shirt
Size: XX-Large, Color: Black_a
I order two deferent Western Cowboy Shirts and both of them fits perfect and true to size. I am 5'7 and 206 pounds and perfect fit, I love black with brown and brown snaps, and the other black shirt has blue snaps. both shirts are nice and warm for the winter season; I most like Stitching good Quality and very Comfortable and worth the money.
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Reviewed in the United States on March 18, 2026

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