7 FAST & EASY ONLINE ORDERING 24/7: MIDWESTWHEEL.COM EXHAUST CATALOG TYPE 4 - MUFFLER: SIDE IN - END OUT T /OD “B” OUTLET DIA. ID/OD “C” BODY DIA. “D” BODY LENGTH “E” OVERALL LENGTH “F” INLET OFFSET / CLOCK POSITION “G” OUTLET OFFSET / CLOCK POSITION MATERIAL TYPE ADDITIONAL INFO D 4" ID 11" 36" 40" 4.5"/3 2.5"/12 A FITS BLUEBIRD/GMC SB. D 3.8" OD 10" x 15" 16" 20.1" 3.1"/12 4.4"/12 A FITS MACK DM D 5" ID 10" x 15" 21" 25" 3.1"/12 4.4"/12 A - D 4" ID 11" 42" 45" 4"/12 0/0 A FITS BLUEBIRD SB. D 4" ID 11" 33.5" 36.5" 4”/12 0/0 A FITS THOMAS SB. D 4" ID 11" 36" 39" 4.3"/9 2.5"/12 A - D 5" ID 10" x 15" 27" 30" 22.4"/5:30 3.6"/12 A DOT/IH D 5" ID 9" 44.5" 48" 3.8"/6 0/0 A - D 5" ID 10" 44.5" 48.25" 5.5"/6 - A FITS GMC BRIGADIER & ASTRO D 5" ID 12.3" x 15.2" 27" 30" 22.4"/5:30 3.6"/11 A DOT/IH AND ROCK IS NOT REQUIRED TO MEASURE OR DOCUMENT DECIBEL RATINGS OR CFM RATINGS ON AFTERMARKET REPLACEMENT MUFFLERS. MATERIAL KEY: A - ALUMINIZED | C - CHROME | S4 - 409 STAINLESS | S3 - 304 STAINLESS 66 LERS, SHIELDS, AND CONVERTERS Mu er Types 9 0 3 12 6 12 3 9 0 6 NOTE: All clock positions viewed from inlet end of muffler. Note: Mu ers available in Stainless Steel, Call for details Type 2 Type 2A Type 3A Type 6 Type 4 Type 3 Type 7 Type 8 Type 9 Type 5 Type 1 .indd 66 6/19/18 11:49 PM NOTE: All clock positions viewed from inlet end of muffler. ERS, SHIELDS, AND CONVERTERS 12 12 NOTE: All clock positions viewed from inlet end of muffler. Note: Mu ers available in Stainless Steel, Call for details Type 2 Type 6 Type 4 Type 3 Type 7 Type 8 Type 9 Type 5 Type 1 ndd 66 6/19/18 11:49 PM MUFFLERS, SHIELDS, AND CONVERTERS Mu er Types 12 12 NOTE: All clock positions Note: Mu ers available in Stainless Steel, Call for details Type 2 Type 2A Type 3A Type 6 Type 4 Type 3 Type 7 Type 8 Type 9 Type 5 Type 1 MUFFLER TYPES MUFFLERS A B C D E Inlet Dia. Outlet Dia. Body Dia. Body Length Overall P/N Ref. # 5" 5" - - 57" HV 31143 5" 5" 10" 44.5" 51" GRRM-465 31165 5" 5" 9" 44.5" 51" GRRM-132 22940, 22964 5" 5" 9" 20" 26.5" GRRM-595 4" 5" 10" 44.5" 51" GRRM-130-4 31045, 22966 4" 4" 9" 44.5" 51" GRRM-131 22936, 22965 4" 5" 9" 44.5" 51" GRRM-514 22941, 22970 4" 4" 10" 44.5" 51" GRRM-444 4" 4" 6" 24" 30” GRRM-630 4" 4" 8.5" 34.5" 41" GRRM-127 21838 4" 4" 6" 24" 30" GRRM-630 5" 5" 9" 10" 16.5" GRRM-145 4" 4" 9" 10" 16.5" GRRM-144 Style 1 Style 2 A E B/O C D F G Inlet Dia. Outlet Dia. Body Dia. Body Length Overall Inlet Offset Outlet Offset Clock In Clock Out P/N 3.5" 4" 8.25 x 11.5" 27" 33" 2.5/12" 2.5/6" - - GRRM-512 3.5" 4" 8.25 x 11.5" 26" 32.25" 2.5" 2.5" 9:00 3:00 GRRM-512 4" 4" 11" 36" 42" 2.5/12" 2.5/6" - - GRRM-529 4" 4" 8.25 x 11.5" 27" 33" 2.5/12" 2.5/6" - - GRRM-153 MUFFLERS M-1236 5" ID 5" ID 12" 36" 41" N/A N/A A - M-1436 5" ID 5" ID 14" 36" 41" N/A N/A A - M-1436Q 5" ID 5" ID 14" 36" 41" N/A N/A A QUIETER M-1436, CALL FOR PRICE AND AVAILABILITY M-651 6" ID 6" ID 10" 44.5" 51" N/A N/A A - M-651-S4 6" ID 6" ID 10" 44.5" 51" N/A N/A S4 CALL FOR PRICE AND AVAILABILITY CM-55C 5" ID 5" ID 6" 38.4" 51" N/A N/A C INTERNAL LOUVERED CORE, NOT VERY QUIET. CM-56C 5" ID 6" ID 6" 38.4" 51" N/A N/A C INTERNAL LOUVERED CORE, NOT VERY QUIET. CM-66C 6" ID 6" ID 6" 38.4" 51" N/A N/A C INTERNAL LOUVERED CORE, NOT VERY QUIET. GPM-1045 5" ID 5" ID 10" 44.2" 49.5" N/A N/A A PACCAR REPLACEMENT, OE# M66-6188, M101451 GRAND ROCK IS NOT REQUIRED TO MEASURE OR DOCUMENT DECIBEL RATINGS OR CFM RATINGS ON AFTERMARKET REPLACEMENT MUFFLERS. MATERIAL KEY: A - ALUMINIZED | C - CHROME | S4 - 409 STAINLESS | S3 - 304 STAINLESS 66 9 0 3 12 6 12 3 9 0 6 NOTE: All clock positions viewed from inlet end of muffler. Type 2A Type 3A Type 6 Type 4 Type 7 Type 8 Type 9 Type 5 Type 1 MUFFLER TYPES 2018CatalogSinglePagesMay2018.indd 66 6/19/18 11:49 PM NOTE: All clock positions viewed from inlet end of muffler. 66 MUFFLERS, SHIELDS, AND CONVERTERS Mu er Types 9 0 3 12 6 12 3 9 0 6 NOTE: All clock positions viewed from inlet end of muffler. Note: Mu ers available in Stainless Steel, Call for details Type 2 Type 2A Type 3A Type 6 Type 4 Type 3 Type 7 Type 8 Type 9 Type 5 Type 1 MUFFLER TYPES 2018CatalogSinglePagesMay2018.indd 66 6/19/18 11:49 PM 12 6 12 3 6 NOTE: All clock positions viewed from inlet end of muffler. Type 2A Type 3A Type 6 Type 4 Type 7 Type 8 Type 9 Type 5 Type 1 MUFFLER TYPES 2018CatalogSinglePagesMay2018.indd 66 6/19/18 11:49 PM C CHROME STAINLESS STEEL S MUFFLER F5 M-070-S4 3" ID 4" ID 11" 36.25" 42" 3"/7 4"/13 S4 CALL FOR PRICE A ND AVAILABILITY M-1136 3" ID 4" ID 11" 36" 42" 2.5"/12 2.5"/6 A - M-139 3" ID 3" ID 8.5" 31.2" 36.2" 2"/12 2"/6 A - M-106 3.5" ID 3.5" ID 8.25" x 11.5" 26" 32" 3"/12 3"/6 A - M-512 3.5" ID 4" ID 8.25" x 11.5" 27" 33" 2.5"/12 2.5"/6 A FITS INTERNATIONAL'S M-536 3.5" ID 4" ID 8.25" x 11.5" 32" 36.5" 2.5"/12 2.5"/6 A FITS INTERNATIONAL SB. M-879 3.5" ID 4" ID 11" 36" 42" 3"/0 0/12 A FITS FREIGHTLINER SB. M-125 4" ID 4" ID 10" x 15" 34" 40.5" 4.25"/6 4.25"/12 A FITS THOMAS SB. M-153 4" ID 4" ID 8.25" x 11.5" 27" 33" 2.5"/12 2.5"/6 A - M-502 4" ID 4" ID 11" 36" 41.2" 2.5"/12 2.5"/6 A FITS FREIGHTLINER/FORD SB. M-529 4" ID 4" ID 11" 36" 41.2" 2.5"/12 2.5"/6 A FITS FORD SB. M-117 5" ID 5" ID 10" x 15" 36" 42" 4"/12 4"/6 A - M-117-S4 5" ID 5" ID 10" x 15" 36" 42" 4"/12 4"/6 S4 CALL FOR PRICE AND AVAILABILITY M-147 5" ID 5" ID 10" x 15" 27" 33" 3.3"/12 3.3"/6 A FITS THOMAS SB. M-4025 5" ID 5" ID 11" 36" 41" 2.5"/12 2.5"/6 A FITS FORDS M-180 6" ID 6" ID 10" x 15" 32" 42.5" 3.6"/12 3.6"/6 A - M-2230 3.5" ID 3.5" ID 8.25" x 11.5" 20" 26" 3"/6 3"/12 A FITS SOME FORD E-450 GRAND ROCK IS NOT REQUIRED TO MEASURE OR DOCUMENT DECIBEL RATINGS OR CFM RATINGS ON AFTERMARKET REPLACEMENT MUFFLERS. MATERIAL KEY: A - ALUMINIZED | C - CHROME | S4 - 409 STAINLESS | S3 - 304 STAINLESS 66 Mu er Types 9 0 3 12 6 12 3 9 0 6 NOTE: All clock positions viewed from inlet end of muffler. Note: Mu ers available in Stainless Steel, Call for details Type 2 Type 2A Type 3A Type 6 Type 4 Type 3 Type 7 Type 8 Type 9 Type 5 Type 1 MUFFLER TYPES 2018CatalogSinglePagesMay2018.indd 66 6/19/18 11:49 PM NOTE: All clock positions viewed from inlet end of muffler. 12 6 12 3 6 NOTE: All clock positions viewed from inlet end of muffler. Note: Mu ers available in Stainless Steel, Call for details Type 2 Type 2A Type 3A Type 6 Type 4 Type 3 Type 7 Type 8 Type 9 Type 5 Type 1 MUFFLER TYPES 2018CatalogSinglePagesMay2018.indd 66 6/19/18 11:49 PM MUFFLERS, SHIELDS, AND CONVERTERS Mu er Types Note: Mu ers available in Stainless Steel, Call for details Type 2 Type 2A Type 3A Type 6 Type 4 Type 3 Type 5 Type 1 MUFFLER TYPES STAINLESS STEEL S MUFFLERS F6 Style 3 A E B C D G H Inlet Dia. Outlet Dia. Body Dia. Body Length Overall Inlet Offset Outlet Offset P/N 4" 4" 11" 36" 39" 4.3/9" 2.5/12" GRRM-724 5" 5" 10" 44.5" 48.25" 5.5/6” 5.50" GRRM-526 A E B C D G H Inlet Dia. Outlet Dia. Body Dia. Body Length Overall Inlet Offset Outlet Offset Clock In Clock Out P/N 3.5" 4" 8.25 x 11.5" 32" 35" 2.5/6" 20/3.30" - - GRRM-537 3.5" 4" 8.25 x 11.5" 32" 34.90" 2.5/12" 24.7/3:30" 3:00 6:30 GRRM-777 4" 4" 11.1" 36" 39" 1.5/6" 28.5/12" - - GRRM-530 Style 4 TYPE 6 - MUFFLER: E PART NO. “A” INLET DIA. ID/OD “B” OUTLET DIA. ID/OD “C” BODY DIA. “D” BODY LENGTH “E” OVERALL LENGTH INLE SET / POS M-537 3.5" ID 4" ID 8.25" x 11.5" 32" 35" 2 M-545 3.5" ID 4" OD 8.25" x 11.5" 32" 34.9" 2. M-548 3.5" ID 4" ID 8.25" x 11.5" 32" 34.9" 2. M-527C1 3.5" ID 4" OD 8.25" x 11.5" 32" 35.5" 2 M-777 3.5" ID 4" OD 8.25" x 11.5" 32" 34.9" 2. M-530 4" ID 4" ID 11.1" 36" 39" 1. M-530S3 4" ID 4" ID 11.1" 36" 39" 1 M-503 5" ID 5" ID 10" x 15" 36" 39" 4 M-672 5" ID 5" ID 11" 36" 39" 2 M-010 5" OD 5" OD 12" 36" 39" 0 M-158A 5" ID 5" ID 13" 42" 45" 0 TYPE 7 - MUFFLER: END M-7185 5" ID 5" / 5" 8" x 20" 29" 32" GRAND ROCK IS NOT REQUIRED TO MEASURE OR D ON AFTERMARKET REPLA MATERIAL KEY: A - ALUMINIZED | C - CHROME | MU MUFFLER TYPES 66 MUFFLERS, SHIELDS, AND Mu er Ty 12 3 9 0 6 NOTE: All clock positio viewed from inlet end of muffler. Note: Mu ers available in Stainl Type 2 Type 2A Type 4 Type 7 Type 8 Type 5 Type 1 MUFFLER TYPES NOTE: All clock posit viewed fro inlet end of muffler. Mu er T 12 3 6 NOTE: All clock posit viewed from inlet end of muffler. Note: Mu ers available in Stain Type 2 Type 2A Type 4 Type 7 Type 8 Type 5 Type 1 MUFFLER TYPES MUFFLERS, SHIELDS, AND CONVERTERS Mu er Types Note: Mu ers available in Stainless Steel, Call for details Type 2 Type 2A Type 3A Type 6 Type 4 Type 3 Type 5 Type 1 MUFFLER TYPES MUFFL Style 5 A E B/O D Inlet Dia. Outlet Dia. Body Dia. Body Length Overall P/N 5" 5" 10X15" 26" 29" GRRM-121 TYPE 3 & 3A - MUFFLER: IN PART NO. “A” INLET DIA. ID/OD “B” OUTLET DIA. ID/OD “C” BODY DIA. “D” BODY LENGTH “E” OVERALL LENGTH “F” INLET OFF SET / CLOC POSITION M-755 3.5" ID 4" OD 8.25" x 11.5" 32" 38.4" 2.5"/12 M-033 4" ID 5" ID 11" 30" 33.5" 3"/12 M-115 4" ID 4" ID 10" x 15" 26.2" 29.2" 4"/12 M-124 4" ID 5" ID 12" x 15" 30.3" 34" 4"/12 M-116 5" ID 5" ID 10" x 15" 36" 40" 4"/12 M-121 5" ID 5" ID 10" x 15" 26" 29" 3"/12 M-121L 5" ID 5" ID 10" x 15" 44" 48" 3"/12 M-121LS4 5" ID 5" ID 10" x 15" 44" 48" 3"/12 M-121L6 5" ID 6" ID 10" x 15" 44" 48" 3"/12 M-899 5" ID 5" ID 12" 35" 39" - M-899-S3 5" ID 5" ID 12" 35" 39" - M-922 5" ID 5" ID 9" 22" 25" - M-922-6 5" ID 6" ID 9" 22" 25" - GRAND ROCK IS NOT REQUIRED TO MEASURE OR DOCUM ON AFTERMARKET REPLACEM MATERIAL KEY: A - ALUMINIZED | C - CHROME | S4 - 4 MUFFLERS, SHIELDS, AND C Mu er Typ Note: Mu ers available in Stainless Type 2 Type 2A Type 4 Type 7 Type 8 Type 5 Type 1 MUFFLER TYPES MUFFLERS, SHIELDS, AND CO Note: Mu ers available in Stainless Type 2 Type 4 Type 7 Type 8 Type 5 Type 1 MUFFLER TYPES MUFFLERS, SHIELDS, AND CONVERTERS Mu er Types Note: Mu ers available in Stainless Steel, Call for details Type 2 Type 3 MUFFLERS, SHIELDS, AND CONV Mu er Types Note: Mu ers available in Stainless Steel, Ca Type 2 Type 2A Type 1 MUFFL MUFFLE
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