{"product_id":"ppe-high-flow-exhaust-manifolds-with-up-pipes-116111200-2002-2004-6-6l-duramax-lb7","title":"PPE HIGH-FLOW EXHAUST MANIFOLDS WITH UP-PIPES 116111200 | 2002-2004 6.6L Duramax LB7","description":"\u003cp\u003eImprove exhaust flow and reduce backpressure in your 2002–2005 GM 6.6L Duramax LB7 or LLY with the PPE 116111200 High-Flow Exhaust Manifolds \u0026amp; Up-Pipes. Engineered for increased performance and long-term durability, this system delivers up to 20% greater exhaust flow compared to factory components while maintaining emissions compliance.\u003c\/p\u003e\n\u003cp\u003eThe manifolds are constructed from high-quality cast iron for exceptional strength and longevity, while the included up-pipes feature heavy-duty stainless steel construction with aircraft-grade internally sleeved bellows. The larger inner diameter and high-flow design help improve exhaust gas movement, reduce restriction, and support improved turbocharger efficiency.\u003c\/p\u003e\n\u003cp\u003eFor enthusiasts who monitor exhaust temperatures, the manifolds are pre-drilled and tapped with a 1\/8-inch NPT port for convenient EGT probe installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncreases exhaust flow by up to 20%\u003c\/li\u003e\n\u003cli\u003eReduces exhaust backpressure\u003c\/li\u003e\n\u003cli\u003eHigh-strength cast iron exhaust manifolds\u003c\/li\u003e\n\u003cli\u003eHeavy-duty stainless steel up-pipes\u003c\/li\u003e\n\u003cli\u003eAircraft-grade internally sleeved bellows\u003c\/li\u003e\n\u003cli\u003eStainless steel inner liner bellows for enhanced durability\u003c\/li\u003e\n\u003cli\u003e11-gauge stainless steel up-pipes with .120-inch wall thickness\u003c\/li\u003e\n\u003cli\u003ePre-drilled and tapped 1\/8\" NPT port for EGT gauge installation\u003c\/li\u003e\n\u003cli\u003eDesigned for long service life\u003c\/li\u003e\n\u003cli\u003e50-state emissions legal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEmissions Compliance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCARB Executive Order: D-701-1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2002–2004 GM 6.6L Duramax LB7\u003c\/li\u003e\n\u003cli\u003e2004.5–2005 GM 6.6L Duramax LLY\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pacific Performance Engineering","offers":[{"title":"Default Title","offer_id":52390549782811,"sku":"116111200","price":1121.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2026-06-23at12.11.55PM.png?v=1782238447","url":"https:\/\/wwmperformance.com\/products\/ppe-high-flow-exhaust-manifolds-with-up-pipes-116111200-2002-2004-6-6l-duramax-lb7","provider":"WWM Performance","version":"1.0","type":"link"}