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Product Summary

Bolt-on Attachment Style, Aluminum, Polished

  • Includes gasket, bolts and mounting hole template
  • Overall height: 4 1/2"
  • Top: 3 7/8" X 2 3/8"
  • Mount surface: 4 3/4" X 2"
  • Bolt center for mounting: 4" center-to-center
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Key Specs

MFG. Part #91017084
BrandSpeedway Motors
Attachment StyleBolt-on
Material TypeAluminum
FinishPolished
See more specs

Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 91017084 Details

It's made of polished cast aluminum and is 4" tall. The base measures 1-3/4" x 4-3/4". The top of this breather is NOT removeable. Breather includes a lower baffle plate in addition to featuring internal layer type baffle where one plate is over the other. It allows the air to breath, but keeps the oil baffled below.

Includes mounting bolts/nuts, breather baffle plate, and gasket.

Charts

Specs

  • Overall Height:  4-1/2"
  • Top:  3-7/8" x 2-3/8"
  • Mount Surface:  4-3/4" x 2"
  • Bolt Center for Mounting:  4" center-to-center

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Speedway Motors 91017084 Specifications

KEY SPECS
MFG. Part #91017084
BrandSpeedway Motors
Attachment StyleBolt-on
Material TypeAluminum
FinishPolished
GENERAL
Sold in QuantityEach
Overall Height4.50"

Ratings & Reviews

4.5

13 Reviews

Overall Assessment

The product has received many positive reviews from users applauding its quality, durability, and design. Customers have described it as a "great product," "nice quality," and "heavy-duty." Many have noted that it works effectively for specific applications, including mounting on valve covers and resolving issues on built engines. Some reported that it's a smaller but very functional alternative to similar offerings from other brands. It's commended for its nostalgic and retro feel when installed on classic engines. The product provides good value for its price, impressing users with its ruggedness and good fit. Some minor issues were found with bolts and gaskets, but overall, it's considered a worthy investment with an excellent finish and design.

4.5

13 reviews

5

8

4

4

3

1

2

0

1

0

Most Liked Positive Review

5.0

Nostalgic piece

I've mounted this piece on my cast aluminum rocker arm cover.very much like the original Offenhauser vents were mounted. It's a little smaller than the Offenhauser vent but very functional. A nice uncommon class act on a classic engine that does not have a PCV system

Most Liked Negative Review

3.0

Splash shield

The inner splash shield rubbed my rocker arms, so I removed it. I was getting a very minor leak at the cork gasket, so I replaced it with a paper/plastic gasket. In the future, I'll scuff the breather and valve cover surface to aid the RTV in sealing. Other wise, a very nice piece.

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Quality product! Well worth the price.

4.0

10 months ago

31 street rodder

Blaine MN.

Verified

I wasn't sure what to expect when I ordered these breathers. They looked nice in the picture. Well, I sure was not disappointed when they arrived. Very nice quality at an affordable price. I highly recommend them!

Would Recommend

great product and quality. timely shipping.

4.0

3 years ago

bobby

north shore MN

Verified

works great for my application

Would Recommend

yes

5.0

6 years ago

none

davidson,nc

Verified

Installed on valve covers.

Would Recommend

Breather.. old school

4.0

6 years ago

DR

Nashville TN

Verified

These would rate 100 if it weren't for the bolts. They're one time use only

Would Recommend

I would buy this product again

5.0

7 years ago

Dickie

Broken Arrow. Oklahoma

Verified

Used two of these on my old orig finned valve covers Looks great

Would Recommend

Breather

5.0

7 years ago

Dahemi

Madison, wi

Verified

Nice quality, good design.

Would Recommend

Nostalgic piece

5.0

7 years ago

Noname

Danville, Ky

Verified

I've mounted this piece on my cast aluminum rocker arm cover.very much like the original Offenhauser vents were mounted. It's a little smaller than the Offenhauser vent but very functional. A nice uncommon class act on a classic engine that does not have a PCV system

Would Recommend

valve cover breather

5.0

8 years ago

Edd

Canyon Country, Ca

Verified

Finish is excellent--bend has a large radius but still fits on big block chevy--clearing carb

Would Recommend

Great quality and priced right

5.0

8 years ago

Georgem

El Paso

Verified

I'm impressed with the quality of this vs the big name brand breathers. Heavy cast and fits nice.

Would Recommend

RACING ENGINE BREATHER

5.0

10 years ago

none

Fremont Ne.

Verified

These breathers solved my problem with a very built 348 Chevy engine. Great product, heavy duty, nice polish job. Thanks, Gary

Would Recommend

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