- Engine Products
- Exhaust Products
- Tech Tips, News & More
- Free Tech Tips
- #162: Cummins B Series Injector Protrusion
- #163: Cummins 4 and 6 B Series Short Block Upgrades
- #164: Upgrading Your Twin Disc/Rockford or Auto Clutch PTO
- #165: Deutz 912 Diesel Connecting Rod Bolts
- #166: Block Heaters, Glow Plugs, and Immersion Heaters for your Perkins, Deutz or Ford Industrial Engine
- #153 Hurth HBW50/100/125/150 Transmissions: Two Common Problems Easily Avoided
- #155: Chrysler LH318 & LH360 Industrial Engines: Easy Block Repair
- #141 Deutz Diesel Engine Model 1013 Fuel Transfer Pumps
- #142 Ford 330 Industrial Engines: Identifying the Dorset and the Dagenham Models
- #143 How NOT To Seat the Piston Rings on Your New Ford 300 Industrial Engine; Cleaning Components When Swapping Accessories
- #144 Deutz 1011 and 2011 Timing Belt Tension
- #145 Installing an Electronic Governor: Five Easy Tips
- #146 Yanmar Engine Tag Locations
- #147 Running a Twin Disc/Rockford? Want It To Last Longer?
- #148: Ford Industrial In-Line 6 Cylinder Gas Engines: How to Tell Them Apart
- #154: AutoClutch Power Takeoff Clutches
- #156: Deutz 1011 & Deutz 1011F Diesel Piston to Wall Clearance
- #158: Power Takeoff Clutch Maintenance: How to Remove a Troublesome Pilot Bearing (Part 3)
- #159: Deutz 912 Engines: New Generation 912 vs. Old Generation 912 Engines Made Easy
- #160: Deutz Diesel Electronic Shutoff Solenoid Selection
- #161: Handy Numbers for Perkins Diesel Owners or Rebuilders
- All Tech Tips
- Ask Dr. Diesel™
- Industry Links
- Guides, Forms & Tags
- Company Info
- Contact Us
Perkins Exhaust Elbows and Flange
Helpful tips on identifying your exhaust elbow & flanges on your Perkins (Part 1) - Tech Tip #60
Exhaust mixing elbows and flanges are found on all fresh water cooled marine engines. These parts need to be replaced often because of their location and exposure to salt water. Unfortunately most are not supplied by the engine manufacturers and so can be difficult to identify. This Tech Tip, one of a series we publish, focuses on identifying mixing elbows and flanges used on 4 cylinder Perkins marine diesels.
The illustration below shows the four most common elbows and the two most common flanges used on four cylinder Perkins diesels.
A. PN ELBOW A
This elbow stands 6" tall, has four bolt holes on the bottom (3.25" by 2.5") and is common on 4108's. It is sometimes identified as PN 3776713.
B. PN ELBOW B
This elbow is 7" in overall diagonal length, male threaded (2.25" OD) on one end, no threads (1.75"ID) and is used on 4108's and 4154's. Used with Flange A (see G.).
C. PN ELBOW C
This elbow is 7" in diagonal overall length, similar in dimension (2.25" OD by 1.75" ID) to ELBO B but is unthreaded at one end and female threaded at the other. It typically uses a five bolt mounting flange. It is found on 4107.
D. PN ELBOW D
This elbow is 9" in overall diagonal length, one end is female threaded and 2.75" ID, the other end 3" OD, unthreaded and found on 4236's.
E. PN ELBOW E
This elbow (sometimes referred to as a 15017 elbow), not pictured above, is large, dome shaped, and resembles a deep sea diver's helmet. It is usually found only on Navy Whaleboats with Perkins 4107's.
F. PN ELBOW F
This elbow, also not pictured above, is 6.5" tall, female threaded (1.875" ID) on one end for a four bolt flange to the manifold, and unthreaded (1.5"ID) at the muffler end. This is commonly found on 4107's or Westerbeke 40's. The Westerbeke PN is 33067.
G. PN FLNG A
This four bolt flange (2.5" by 3") with a 2.5" OD bolts to the late style 4108 heat exchanger/exhaust manifold (PN PE 180) and accepts ELBO B. it is sometimes identified as PN 37426472.
H. PN FLNG B
This five bolt flange, (2" by 2") with 1.75" OD bolts to early style 4107/8 exhaust manifolds and accepts several elbows including ELBO E. it is sometimes identified as PN 0380203.
We hope that the above chart is useful. To help us expand it we are offering $25 Foley Gift Certificates to any readers who can identify other Perkins elbows and flanges. Please call with your suggestions.
We take tech support seriously!
We hope that you will find this Tech Tip helpful. We believe that Tech Support matters and welcome your comments or suggestions.
Please email Dr. Diesel™ using our contact form or call us at 800.233.6539.