Volvo Penta OEM Line Cutter / Thrust Washer 872082 | SP-A1 SP-A2 SP-C SP-C1 SP-E Aquamatic Sterndrive

Volvo Penta OEM Line Cutter / Thrust Washer — Part 872082

• Part Number: 872082
• Brand: Volvo Penta (Genuine OEM)
• Official Product Type: Sterndrive & Drive Components — Line Cutter / Thrust Washer
• System: Single-prop Aquamatic sterndrive — propeller installation hardware stack
• Position: Propeller shaft, ahead of the propeller hub — functions as both the propeller thrust washer and a fishing-line/debris cutting ring
• Application: SP-A1, SP-A2, SP-C, SP-C1, and SP-E single-prop Aquamatic sterndrives
• Replaces: 3803128, 3803129, 3803130 (earlier Volvo Penta line cutters superseded by 872082)
• Weight: approx. 0.5 kg

Dual function — line cutter and thrust washer: 872082 is not only a fishing-line protection ring — it is also the propeller thrust washer in the propeller installation hardware stack. It intercepts fishing line, rope, and debris before they reach the propeller-shaft seal area, while simultaneously providing the forward thrust surface for the propeller. Volvo Penta assigns different thrust washer / line cutter part numbers to different Aquamatic drive generations — confirming the exact sterndrive model (SP-A1, SP-A2, SP-C, SP-C1, or SP-E) is more important than matching by appearance alone.

What It Is

The 872082 is the genuine OEM line cutter / thrust washer for Volvo Penta single-prop SP-series Aquamatic sterndrives. It installs in the propeller hardware stack at the propeller shaft, ahead of the propeller hub, where it performs two jobs simultaneously: it provides the thrust surface that transfers propeller thrust to the drive, and it acts as a cutting/protection ring that intercepts fishing line and rope before they can wrap around the propeller shaft and reach the shaft seal. Volvo Penta’s current propeller installation guide specifies 872082 for SP-A1, SP-A2, SP-C, SP-C1, and SP-E drives. It supersedes earlier Volvo Penta line cutters 3803128, 3803129, and 3803130.

Compatible Applications

872082 is drive-family specific. Confirm the sterndrive model before ordering — similar Volvo Penta Aquamatic drives use different line cutter / thrust washer part numbers.

• Volvo Penta SP-A1 — single-prop Aquamatic sterndrive
• Volvo Penta SP-A2 — single-prop Aquamatic sterndrive
• Volvo Penta SP-C — single-prop Aquamatic sterndrive
• Volvo Penta SP-C1 — single-prop Aquamatic sterndrive
• Volvo Penta SP-E — single-prop Aquamatic sterndrive

Drive-family reference — other Volvo Penta Aquamatic drives use different part numbers:

• 832965 — 200 drive
• 839534 — 250, 270, 275
• 839423 — 280, 285, 290, SP-A
• 872082 — SP-A1, SP-A2, SP-C, SP-C1, SP-E (this part)

Not sure which line cutter fits your drive? Send us your Volvo Penta sterndrive model and serial number before ordering.

Kit Contents

872082 is a single-piece line cutter / thrust washer. It is typically ordered as part of a propeller service together with the other propeller installation hardware components listed below.

Related Propeller Hardware

Volvo Penta single-prop installation hardware used with 872082 depending on the drive and propeller hub type. These are sold separately:

• 854045 — Propeller cone
• 850889 — Locking screw
• 850888 — Plastic washer
• 854047 — Spacer ring (applicable short-hub propeller installations)
• 897367 — Tab washer (drives without internally threaded propeller shaft)
• 873058 — Volvo Penta propeller service tool reference

The exact propeller installation hardware stack differs between short-hub and long-hub propellers and between earlier and later propeller-shaft designs. Follow the correct Volvo Penta propeller installation arrangement for the drive model.

Part Numbers

• 872082 — Current Volvo Penta OEM line cutter / thrust washer
• 3803128 — Earlier Volvo Penta line cutter superseded by 872082
• 3803129 — Earlier Volvo Penta line cutter superseded by 872082
• 3803130 — Earlier Volvo Penta line cutter superseded by 872082

When to Replace

Inspect or replace the line cutter / thrust washer when:

• The cutting edge is worn, chipped, or no longer sharp enough to intercept line effectively
• The thrust surface is grooved, distorted, or shows abnormal wear patterns
• Fishing line or rope has wrapped behind the cutter and reached the propeller-shaft seal area
• The washer has been damaged or distorted during propeller removal
• Propeller-shaft seal service reveals wear at the thrust washer seating surface
• The component is missing when a propeller is removed for service

If fishing line has reached the area behind the cutter, inspect the propeller-shaft seals before returning the drive to service — line that wraps past the cutter can damage or displace the shaft seal.

Service Interval

Inspect at every propeller removal. Because 872082 is in the propeller hardware stack, it is directly accessible each time the propeller is removed. Inspect the thrust surface and cutting edge at each propeller service and replace if there is any sign of wear, distortion, or damage. In areas with heavy weed, rope, or fishing-line activity, more frequent inspection is recommended. Replace the component whenever the propeller-shaft seals are being renewed — the assembly is already disassembled and the washer is an inexpensive part relative to a full drive reseal.

Installation Notes

• Confirm 872082 is the correct line cutter / thrust washer for the specific Volvo Penta SP-series drive model — do not substitute based on appearance or thread fit from an earlier drive generation
• Follow the correct Volvo Penta propeller installation arrangement for the drive and propeller hub type (short-hub vs. long-hub installations use different hardware stacks)
• Inspect the propeller shaft and seal carrier for line damage or groove wear before installing the replacement washer
• If fishing line reached the shaft seal during the previous service interval, replace the propeller-shaft seals at the same time
• Ensure correct orientation of 872082 in the hardware stack as shown in the Volvo Penta propeller installation diagram for the drive
• Verify correct engagement with adjacent hardware (propeller cone 854045, plastic washer 850888) before tightening the propeller
• Torque the propeller and related hardware to Volvo Penta service specifications for the drive model

Technical FAQ

Q: Is 872082 just a line cutter, or does it also serve as a thrust washer?
Both. 872082 combines two functions: it is the propeller’s forward thrust washer in the hardware stack and a cutting/protection ring that intercepts fishing line, rope, and debris before they reach the propeller-shaft seal. Both functions are critical — omitting or reusing a worn 872082 affects both shaft protection and proper propeller installation.

Q: Does 872082 fit all Volvo Penta Aquamatic sterndrives?
No. Volvo Penta uses different line cutter / thrust washer part numbers for different Aquamatic drive generations. 872082 is specifically for SP-A1, SP-A2, SP-C, SP-C1, and SP-E drives. The 200 drive uses 832965; the 250/270/275 use 839534; the 280/285/290 and SP-A use 839423. Confirm the drive model before ordering.

Q: What earlier part numbers did 872082 replace?
872082 supersedes earlier Volvo Penta line cutters 3803128, 3803129, and 3803130. If your Volvo Penta parts system or diagram shows any of these older numbers for an SP-A1, SP-A2, SP-C, SP-C1, or SP-E drive, order 872082.

Q: What happens if fishing line gets past the line cutter?
Line that gets past 872082 can wrap around the propeller shaft and work into the shaft seal area. This can damage or displace the propeller-shaft seal, leading to water intrusion into the drive. If line has reached behind the cutter, inspect the shaft seal before returning the drive to service. Replacing the seal at this point — while the propeller is already off — is far less costly than addressing a leaking or failed drive later.

Q: Do I need to replace the full propeller hardware stack when I replace 872082?
Not necessarily, but inspect the other propeller installation hardware components (propeller cone 854045, plastic washer 850888, locking screw 850889) whenever the propeller is removed for service. These are inexpensive parts and replacing any that show wear at the same service avoids a second disassembly.

Parts Desk Insights

The most important thing to communicate about 872082 is the dual function — it is not just a fishing line guard, it is the thrust washer. Customers who remove a worn or damaged 872082 and do not replace it are leaving the drive without a proper propeller thrust surface. The most common ordering mistake is customers searching for “Volvo Penta line cutter” and not confirming the drive generation — the 200/250/270/280/SP-A drives use different part numbers and they are not interchangeable. The scenario driving most 872082 orders is propeller removal in weedy or line-heavy water where the cutter shows wear or line was found wrapped behind the propeller. In that case, it is worth asking whether the prop shaft seal was also compromised before the customer closes out the service.