HomeEngine > Gaskets and Sealing SystemsApex ATC3691 Engine Crankshaft Seal Kit - Front
Part #: ATC3691

Apex ATC3691 Engine Crankshaft Seal Kit - Front

Front
12 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Buick and Cadillac, DTS and Lucerne
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Engine Crankshaft Seal Kit for Buick and Cadillac

The Apex ATC3691 Engine Crankshaft Seal Kit is designed specifically for Buick DTS and Cadillac Lucerne models. This kit provides a precise fit to help maintain engine integrity by preventing oil leaks around the crankshaft.

  • Compatible with Buick DTS and Cadillac Lucerne vehicles
  • Engine crankshaft seal kit designed for effective sealing
  • Part number ATC3691 ensures exact replacement
  • Durable materials engineered for long-lasting performance

Durable and Precise Engine Seal Replacement

The Apex ATC3691 crankshaft seal kit is engineered to meet the specifications required for Buick DTS and Cadillac Lucerne engines. Proper sealing around the crankshaft is critical to prevent oil leaks that can lead to engine damage or reduced performance. This kit offers a reliable solution for maintaining engine sealing integrity, helping to extend the life of your vehicle’s engine components.

Applications and Common Issues Addressed

  • Prevents oil leaks from the crankshaft area
  • Reduces risk of engine contamination and damage
  • Helps maintain proper engine oil pressure
  • Addresses wear and tear from prolonged use
  • Replaces worn or damaged crankshaft seals in Buick DTS and Cadillac Lucerne

Installation Notes and Tips

When installing the Apex ATC3691 crankshaft seal kit, ensure the engine is cool and clean the sealing surfaces thoroughly. Proper alignment during installation is essential to avoid premature seal failure. Use appropriate tools to press the seal evenly into place without damaging the sealing lip.

Quality Assurance and Warranty

Apex manufactures the ATC3691 crankshaft seal kit to meet industry standards for durability and fitment. While specific warranty details are not provided, Apex products typically undergo quality control to ensure reliable performance in Buick DTS and Cadillac Lucerne applications.

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2011BuickLucerne4.6LV8Front
2011CadillacDTS4.6LV8Front
2010BuickLucerne4.6LV8Front
2010CadillacDTS4.6LV8Front
2009BuickLucerne4.6LV8Front
2009CadillacDTS4.6LV8Front
2008BuickLucerne4.6LV8Front
2008CadillacDTS4.6LV8Front
2007BuickLucerne4.6LV8Front
2007CadillacDTS4.6LV8Front
2006BuickLucerne4.6LV8Front
2006CadillacDTS4.6LV8Front

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.