11700326 Flange Screw | Genuine Volvo Penta Part

🔧 Product Description

Volvo Penta lists this part as the flange screw supplied inside its published overhaul kits. It appears in 6 of them: 877645 for TAD520VE (Tier 1); 3843579 for TAD520GE (Tier 2); 3842345 for TD520GE (Tier 1), TAD520GE (Tier 1); 3842346 for TD720GE (Tier 1), TAD720GE (Tier 1); 877646 for TAD720VE (Tier 2), TAD721VE (Tier 2); 3843580 for TAD720GE (Tier 2).

🚤 Compatibility

• Engine Family: D, TD, TAD, MD
• Year Range: Approximately late 1990s through 2000s

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 11700326
• System group: Engine
• Net weight: 0.075 kg
• Flange-head design distributes clamping load without a separate washer
• Fits D5 and D7 marine diesel engines, TD/TAD 520-765 industrial and genset engines, and MD2010 series
• Engine type: Volvo Penta D5A / D7A / D7C and corresponding TAD / TD diesel engines
• 8 used per assembly
• Listed by Volvo Penta as the flange screw in its overhaul kits
• 12 off in overhaul kit 877645 (TAD520VE (Tier 1))
• 8 off in overhaul kit 3843579 (TAD520GE (Tier 2))
• 8 off in overhaul kit 3842345 (TD520GE (Tier 1), TAD520GE (Tier 1))
• 12 off in overhaul kit 3842346 (TD720GE (Tier 1), TAD720GE (Tier 1))
• 12 off in overhaul kit 877646 (TAD720VE (Tier 2), TAD721VE (Tier 2))
• 12 off in overhaul kit 3843580 (TAD720GE (Tier 2))
• Used in overhaul kits: 877645 x12 (TAD520VE (Tier 1)); 3843579 x8 (TAD520GE (Tier 2)); 3842345 x8 (TD520GE (Tier 1), TAD520GE (Tier 1)); 3842346 x12 (TD720GE (Tier 1), TAD720GE (Tier 1)); 877646 x12 (TAD720VE (Tier 2), TAD721VE (Tier 2)); 3843580 x12 (TAD720GE (Tier 2))

🔌 Function

Secures engine-mounted components and brackets to their mating surfaces, with the flanged head spreading the clamping force over a wider bearing area. It maintains correct joint preload so the attached component stays sealed and located under vibration and thermal cycling.

⚠️ Common Signs of Failure

• Loose or backed-out fastener allowing component movement or vibration
• Corroded or seized threads that prevent correct torque on reassembly
• Rounded or damaged head making removal difficult
• Stretched or snapped shank after over-torquing
• Leaks or fretting at the joint face caused by lost clamping load

🛠️ Service Notes

• The integral flange spreads the load and forms the bearing face, so do not add a separate washer unless the workshop manual for your engine specifically calls for one
• Clean the threads and the seating face before fitting — grit, paint or old sealant under the flange gives a false torque reading and the joint will slacken off in service
• Where the flange is serrated it must bear directly on clean metal to grip; discard any screw with a deformed flange or damaged serrations rather than reusing it
• Tighten to the torque and sequence given in the workshop manual for your engine, and treat the screw as single-use where the manual specifies an angle-tightened or stretch fastener
• Check the thread in the receiving component at the same time; a pulled or corroded thread will not hold a new screw however carefully it is torqued
• Volvo Penta's overhaul kits call for 8 or 12 off of this part, the count following the number of cylinders

🔄 Supersession & Cross Reference

Other-Brand OEM Numbers

• Deutz 04200468
• Deutz 02903964

Aftermarket / Verified Equivalents

• BF 20060551038
• OE Germany: 040311101300
• OE Germany: 030311700000
• Mi Otomotiv: 347.068004

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D7A-B TA, D7A-T, D7A-TA, D7C-B TA, D7C-TA, D7C-A TA
• Volvo Penta D5A-B TA, D5A-T, D5A-TA
• Volvo Penta MD2010, MD2010B
• Volvo Penta TAD520GE, TAD520VE
• Volvo Penta TAD530GE MECH, TAD530GE EDC4
• Volvo Penta TAD531GE MECH, TAD531GE EDC4
• Volvo Penta TAD720GE, TAD720VE
• Volvo Penta TAD721GE, TAD721VE
• Volvo Penta TAD722GE, TAD722VE
• Volvo Penta TAD730GE MECH, TAD730GE EDC4
• Volvo Penta TAD731GE MECH, TAD731GE EDC4
• Volvo Penta TAD750GE, TAD750VE
• Volvo Penta TD520GE, TD520VE
• Volvo Penta TD720GE, TD720VE PP
• Volvo Penta TAD532GE EDC4
• Volvo Penta TAD550GE
• Volvo Penta TAD551GE
• Volvo Penta TAD560VE
• Volvo Penta TAD561VE
• Volvo Penta TAD732GE EDC4
• Volvo Penta TAD733GE EDC4
• Volvo Penta TAD734GE
• Volvo Penta TAD751GE
• Volvo Penta TAD752GE
• Volvo Penta TAD753GE
• Volvo Penta TAD754GE
• Volvo Penta TAD760VE
• Volvo Penta TAD761VE
• Volvo Penta TAD762VE
• Volvo Penta TAD763VE
• Volvo Penta TAD764VE
• Volvo Penta TAD765VE